endobj %%EOF It’s a little bigger than what is called out on the blueprint, but in my experience I would rather have this hole a hair bigger because the last thing you want is the spring or detent getting stuck in this blind hole. Here is a pic showing the center mark being punched… I. I set the calipers to 0.818” and referenced the inside of the jig as shown in this pic… or tap to use in each location. Doing this will make If you try to apply a lot of down force on the drill bit, then the drill bit will dig itself in the material and you won’t be able to turn it with your hand. Finishing an 80% AR15 lower is not hard at all. Simply slap jig on the receiver as show below and secure it with a C-clamp. The trigger pocket is also typically milled to different dimensions to prevent the acceptance of an auto-sear as well. Joined: Feb 10, 2008 Messages: 201 Location: Austin TX. Here’s a pic showing that…  After you mark the location and remove the pistol grip, you should have something like this…   II.   - Bubble Level   - Transfer Punch Set I applied cutting fluid to the drill before drilling each hole. Addeddate 2016-02-09 07:52:59 Identifier AR-15_Scratch-Built_Receiver_Blueprint Identifier-ark ark:/13960/t6n056g1g Ocr ABBYY FineReader 11.0 Pages 68 The blueprint can be used for reference The Diagram & Blueprint IV. Complete M-16 Bolt Carrier Group with Nitride Coating. I messed up a 80% 308 lower this way, and it's a more expensive mistake because 308 lowers are generally a lot more expensive than AR lowers (you can already buy AR 80% lowers from Tactical Machining for like 30 dollars) h�bbd``b`�@�q+�`qY> �M@�w�� center of where the safety selector The rear hole goes all the way through, but the front only goes through the right hand side of the receiver. every cut was precise. Leave an allowance of about 0.010” to 0.020” around the pocket.       - (A) 1/4 Drill   - Irwin Quick Grip - 8" & 12” detent hole will be. I also used a 2x4 that was 7.25” long to support under the buffer tower… With this center mark it will give the drill point a place to start. I wasn’t too worried about the life of my CNC jig since I usually machine all of my stuff on a CNC machining center, but if you want to extend the life of your jig, you can use transfer punches to center mark the locations of the holes to be drilled instead of actually drilling through the jig. AR Build 00023 To control the depth of the holes, Modulus Arms includes a drill stop and a template. I used the dremel with a sanding stone and ground a little indention for the clearance. Nitrided M-16 Bolt Carrier Group. The next hole I decided to drill was the front take down pin detent hole. As you probably noticed several of the holes in the AR15 lower receiver are not critical at all. But I will soon give the lower a black anodize finish. This allowance will be machined during the finish pass. III. “The AR-15 is a lightweight, 5.56 mm, magazine-fed, semi-automatic rifle, with a rotating-lock bolt, actuated by direct impingement gas operation or long/short stroke piston operation. Firearms. AR15/AR10 .308 General Information Here is a pic after the hole is drilled… The depth of this hole isn’t critical at all, because it’s just clearance for the little tab on the buttstock… I then used a center punch to mark the locations of the two holes… should hit the center of the selector What are the gun laws of Qatar anyway? With CNC, the machine controls everything, so there’s no human error, thus you can run at higher spindle speeds. I bead blasted the lower before I started this tutorial to give a better contrast of where cuts will be made. In Stock Style: Mil-Spec Details; Q&A (3) Reviews (6) 3.7. All of the internals from the AR15 parts kit fell right into place. | Tutorial, - After about 5 or 6 turns, you should be able to stop checking the tap, because at that point there is no turning back, you will simply have either done it correctly or not. Rev. Instead of scribing the other line, I decided to use a 0.109” diameter transfer punch and set it against the take down pin lug… When drilling this hole, make sure you go SLOW, take small pecks, and use plenty of cutting fluid. Below the trigger slot adapter plate image you will see the milling adapter kit to help you remove the material from the fire control pocket in AR style lowers. Next I drilled the front take down pin hole… If you don’t remove the chips, they will get compacted in the hole and cause the drill to break or The pic below shows the pistol grip on the lower ready to have the hole location marked… It is important to check the drill stop after each hole to ensure you still have the correct depth. I will once again use the 2 line scribe method. And below is what the receiver looks like aligned in the jig ready to be drilled… jig by placing the level on the front 12. Below is a pic of the hammer pin hole being drilled… I used a (F) #40 drill for this hole. All information contained in this tutorial is for educational purposes. To do this I turned the jig upside-down and set it on the edge of the drill press table. The next step in the 80% lower project is to drill the buffer tube hole out to Date: 6/5/07, *** (I have not verified any dimensions) 11-30-2015, 07:45 PM #4. diagram will show you which size drill Then barely start the tap into the hole and insure it stays level with the of the Hole Not that there’s anything wrong with that! on the pics below to download pdf files Lower Parts Kit M16. walk off position. Tim at dumpsterCNC made the 1911 solidmodel *.iges file. There are only two small operations which would make an ar lower select fire capable.       - (J) #3 Drill These dimensions are for milling out the fire control pocket and trigger slot.   V. Conclusion. Joined: Dec 27, 2002 Messages: 981 Location: SE Quad, Penns Woods. Finishing An AR-15 80% Lower Receiver - Fire control pocket milled out - By: Justin / jwh02017 Rev. AR-­‐15 Jig Manual Ver.       - (K) 1/4 - 28 Tap To use them, select the correct drill bit size, place the bit into the template and then tighten the drill stop to achieve the correct drilling depth. Date: 6/5/07 *** NOTE: This tutorial uses Kevin's older style 80% lowers *** Outline: I. receivers that are to end up with the M16 fire control pocket/cavity (which almost all end-users prefer currently) for use by Type 07 FFL's/Class 2 SOT's. Suppressors. These two AR-10 platforms are not the only .308 AR platforms available but they do dominate the market. Take the same precautions when drilling this hole as taken with the front take down pin detent hole… This hole is a two-step process. That said, if you are familier with the blue prints on a M16 it is not hard to free hand one after you have done the fire control pocket to AR … endstream endobj startxref I started with the newer 80% AR15 lower receivers that Kevin is now selling (Email: audibk@yahoo.com) The new 80%'ers Kevin sells has the fire control pocket solid. These new AR15 lower receiver milling adapters allow you to remove the material from the fire control area in AR type lower receivers. There are several ways to complete an 80% lower.       - (I) #42 Aircraft Extension Drill Readme for Scratchbuilt AR15 Receiver Blueprints By elmgrove1765@yahoo.com 1. One adapter allows you to drill the hole locations and the other adapter allows you to remove the material using your drill press. The drill press was operated at the lowest spindle speed of 540 RPM’s throughout this project.       - (D) 5/32 Drill Visually rough out the large pocket of the fire control pocket, but not the rear slot, to a depth of 1.250”. AR-15 Fire Control Group Laser Cut Disconnector. Receiver Extension Dimensions Because I used an A4 rifle in this example, the dimensions of the receiver extension aren’t mentioned. Many companies still sell their lowers with M16 trigger pocket dimensions, they are just missing the proverbial "third-hole".Drilling that third hole is what legally changes your AR-15 from a semi-automatic rifle, into an illegal machine gun.   - 2x4 piece of wood - 7.25” long The jig makes this one of the easiest steps in the 80% project. After a few turns of the tap, you should have something that looks like this… In this tutorial I will demonstrate how easy it is to complete an 80% AR15 lower receiver using the CNC Gunsmithing jig. Here are a couple pics to show you what I’ll be starting with. But to make the job easier I decided to use a transfer punch to make a center mark where the location should be. Unless you are able to get the jig very secure, this size of drill will tend to vibrate and chatter in the hole.       - (B) 13/64 Drill and side of the tap. To scribe the location lines, you’ll need an X and Y measurement, and then you drill where the two lines cross. 10 ft-lbs of torque. As mentioned in the introduction, the steps I took to complete my 80% lower may not be the same steps you take. You will need to set the jig on a flat object so the bolt heads don’t get in the way. Next, I used a flat object and placed it at the rear of the jig and scribed a line at a distance of 2.626”… The only difference I could tell between this AR15 and any other one Basically the idea is to get the jig in a bench vice setting With a little patients anybody can do it. Once I was sure both surfaces were flush, I tightened the two   - Calipers For Class 2 manufacturers to easily and accurately place the holes for factory select-fire components into a previously semi-automatic-only weapon. I know this may sound a little crazy, but it works. This hole DOES NOT go all the way through the receiver. Mfr Part: 709100021520. Below is what it looked like after these holes were drilled… I set the calipers to 1.575” and again referenced the top plane of the buffer tower… Introduction LJH, Feb 22, 2009 #7. AR-15 carbine receiver extensions should be 1.14″ in diameter, also known as “mil-spec” in the advertising world.   - Sharpie Marker As with several other holes in the AR15 lower, the trigger guard pin holes aren’t critical. 26 0 obj <>/Filter/FlateDecode/ID[<456797F027EE644C8899DC2F9D53C321>]/Index[14 20]/Info 13 0 R/Length 73/Prev 45083/Root 15 0 R/Size 34/Type/XRef/W[1 2 1]>>stream I decided to start with the (A) 1/4 drill. Like the previous hole drilled, the location of this detent hole isn’t critical either, so I used the two-line scribe method again. I scribed a line that was 0.748” from the left side of the receiver to the hole location… Tools Used III.   - 3/16 Allen Hex Wrench The next set of holes I drilled were those located on the buffer tower. Introduction II. 1.1 Page 2 Parts Description: Your jig kit consists of a right and left jig wall, a drilling adapter plate, trigger / fire control milling adapter plate, shelf and trigger slot milling adapter plate, four 1” x 1/4” Allen bolts, and AR15 to M16 Class 2 Drilling and Check Fixtures. The CNC jig takes all the guesswork out of finishing this project. Next you need to prop up the buffer tower end with a block that is 2.500” tall.   - Drills & Taps: switch hole. Then I scribed a line for the detent hole. The opposite is the “commercial spec.” To do so is to create an illegal machinegun and can lead to hard prison time. This drill is used for the hammer and trigger pins and also the bolt catch plunger hole. In today's market, Armalite style and DPMS style are the two most popular specification that manufacturers use when making AR-10s. starting the 1/2" drill more forgiving… Even after you have the lower receiver complete you will find ways to use Below is a pic showing my setup during the drilling process… More details. There are easier and harder ways to complete this project, it all depends on what tools you have access to. He sells the nicest 80% forged receivers I’ve ever seen. I drilled the detent hole first with a (F) #40 drill. It is manufactured with the extensive use of aluminum alloys and synthetic materials. View Profile View Forum Posts Stainless Join Date ... but from experience except for the fire control pocket and the mag well it's easier to do it on a manual mill with dro And then why should some one after putting in the work to generate a solid model just throw it out there for every clown to use for free. Too much … Then I drilled the bolt catch plunger hole. Next I used the (D) 5/32 drill. I used the Irwin Quick Grip clamp. Diagram & Blueprint The next hole I decided to drill was the safety selector detent hole. worst case scenario it will mess with your trigger springs a little bit. From the top surface of the jig, you need to drill down 1.500”. If you happen to get this hole off location a little bit, you can simply open up the hole that’s in the pistol grip itself. Tutorial: I started with an 80% AR15 lower receiver from Kevin (Email: Tooling make sure they are good and sharp to Then I set the travel distance of the drill press to 1.500” while the drill bit was still touched off on top of the jig… The hole for the magazine catch was already drilled when I received my 80% lower so I didn’t have to worry about drilling that hole. This unit accurately locates all of the drilling holes for either platform of semi or select-fire. AR15 Lower Receiver Blueprint PDF DOWNLOAD. The Colt AR-15 is a lightweight, ... hammer and fire selector (collectively known as the fire control group). 0 Disclaimer: This article will discuss the process of completing an AR-15 80% lower with common tools found in most hardware stores. The first line I scribed was the distance from the back of the buffer tower to the Here is what it should look like after you have the hole drilled… The BATFE have ruled that no M16 auto or burst parts can be installed in a non-NFA registered lower. So with the (D) 5/32 drill in the chuck, I locked in the spindle with the drill touching the center mark… The next step is to use the (I) #42 aircraft extension drill to drill the bolt catch pin hole. M16 Full Auto Replacement Parts - FTF Industries Inc specializes in MAC Cobray RPB SWD Parts & Accessories, AR15/M16 & AK47 Parts and accessories, Tactical Automatic Knives, Advanced Technology ATI Shotgun Stocks, Gunsmith's Tools & other very unique items. during the project. With the transfer punch against the lug and on the 0.250” scribe line, I made the center mark… This drill is used for the front and rear take down pin holes. This is a little fast for this size of a drill.   I. And here’s a pic showing the center mark… Below is a pic of the rear take down pin hole being drilled… Introduction: 1 1/8” diameter with the (H) 1 1/8" drill. as such. In order to get the next scribe line I had to remove the receiver from the jig, but it’s not a big deal because it’s easy to re-align the receive in the jig. I will again use the 2 line scribe method, but this time there will be 4 sets of lines scribed since there are 2 separate hole locations. Here is a pic showing that… It can all be done right on your drill press. Some people don’t even drill these holes, but I feel having a trigger guard makes for a safer firearm.   - 80% AR15 Lower Receiver Again I locked the spindle in with the (F) #40 drill touching the center marked surface and set the drill depth to 1.125”… Tools Used (���pȦM[,$%#�[M�}x�6��G�c~��l�x/=Ys��)wԭCQ7lR��r����gס ��lZ��$��qsZ��`��!�f�*E�ž�?M0��>¬��r�9��}`�@�'8�m���k�}Q%�ס9g�bQ��Q��p�ǰ� ��C�t��!6-�u�o�HÍ�.�Uϛz�l�z��zTw��yZ�]���iҗ����ߋ3CH����H2�1$=Ϣ��&t䊧�3tRxq�������V���Z�u�2�8���4r�� x'�HIg�2���*LF��wԙ�. So in theory, you really don’t need the 0.748” scribe line if you use the 0.216” diameter punch. The idea to drill and tap this hole is to slide the pistol grip on the lower receiver, and then use a sharpie marker to mark the location of the hole. M16 Parts. I scribed the first line at a distance of 2.430” from the top of the jig to the trigger guard area. Riss Member. I slapped an upper on this new firearm and took it out shooting and I didn’t have any problems at all. After the detent hole is drilled, it M-16 Lower Parts Kit . As you can see in this Again, go slow and use plenty of cutting fluid and you shouldn’t have any problem tapping this hole by hand… endstream endobj 15 0 obj <> endobj 16 0 obj <> endobj 17 0 obj <>stream I drilled both holes while the jig was laying on the left hand side of the receiver. This compact jig assembly is designed specifically for 80% mil. Release Dates June 2002: Scratchbuilt AR15 receiver project completed and test fired Oct 2002-Mar 2003: Incremental release of readme.txt and all 11 parts blueprints: sideleft_rev_A.pdf - rxvr left side plate sideright_rev_A.pdf - rxvr right side plate fcwell_rev_A.pdf - fire control well bottom … The last step is to drill the trigger guard pin holes. Find AR-15 parts and accessories for performance and personalization at affordable prices.   (Optional Items) Be patient when using this method because it’ll only work if you remove a little bit of material at a time.   - Cutting Fluid (WD-40) You don't However, this is not a rule. Jpowers, Feb 22, 2009 #6. To see how well everything lined up, I inserted the (B) 13/64 drill into the jig and it slid right through the receiver without any problems at all. Next, I used the (C) 1/8 drill to drill the front and rear trigger guard pin holes. Tutorial V. Conclusion. So if you need a dimension while working on your project, you will have to reference the model.       - (C) 1/8 Drill Our Low Price $21.97 QuickView CMC AR-15 Drop-In Two Stage Match Trigger Flat Bow 4 lb Pull Black 92504 CMC AR-15 … Then I used the (K) 1/4-28 tap to finish up the hole. Add to Favorites Add to Wish List. The same thing was done for a distance of 4.471”… Andy at Helix60@neo.rr.com made the VZ58 *.iges file. M16, AR-15, M-16, MilSpec quality parts Made in the U.S.A << Back ... M-16 Fire Control Group, 3 position full auto, includes Hammer, Trigger, Selector, and Disconnector for 3 position operation of safe semi and full auto. Colt AR-15 CAD Files Note the following files are for reference only, and are not intended for use in production of an actual firearm or sear. style 80% lowers ***, Outline: This hole goes through to the rear take down pin 1/4" hole. Fire Control Group Pocket (Rear) - Anderson - Aero. Then I set the drill depth to 0.188” See Figure 6. I. The next step was to drill the hole… $8��X� �" �~#�\�^F���ӿ -T Next, it was time to drill and tap the pistol grip hole. 3 years ago. This is a super easy hole to complete because again, it’s not critical. Just be sure to take your time, and always remember to measure twice and cut once. To locate the drill to the pre-drilled hole, I simply kept moving the jig and turning the drill until the drill was even on all sides of the hole. The drop-in auto-sear was designed in the mid 1970's for the sole purpose of converting the AR-15 to fire full-autD (select fire]. when the bolt is closed and the firing mechanism is released, the firing pin indent shall be not less than 0.020 inch. I used all new drills and taps to insure So to solve this problem, I decided to just turn the drill chuck by hand while applying a little down pressure on the drill bit. Upper Parts; Lower Parts; AR 10. I used the (J) #3 drill for the pistol grip hole. Add to Cart. Optics. This drill is used for the safety selector switch hole. So what I demonstrate here may not be the way you finish your 80%’er, but it’s what I thought was the easiest at the time with the tools I had access to in my garage. Conclusion: Perform a full depth finish pass to bring the pocket to its finished dimensions. audibk@yahoo.com) He sells the nicest For reference, an average spindle speed when I run the CNC machines is 10,000 RPM. This includes the (G) 1/2" drill and the (F) #40 drill. have to use new drills, you just need to Below is a pic of this hole being drilled… it level both front to back and side to side. II. I used a 0.216” diameter transfer punch… 3.4.2 Firinq pin indent. When you are done it should look like this…  worried about tapping this hole, but it’s not a big deal at all. Later on, I hope to make available other files dealing with my projects...including sketches, setup sheets, programs, etc. Home; About Us; My Account; Contact Us; Terms and Conditions; Firearm/Suppressor Sales; Hello, Guest | My Account; 0 Items Toggle navigation. So I am confident the lower is in the exact location within the jig. Tutorial   IV. I believe anybody can finish an 80%’er if they have I feel this spindle speed is safe for this type of manual work. Before I drilled these holes, I wanted to make some clearance for the drill on the front trigger guard pin hole. Visit the I had to use a piece of board for the block and jig to set on since my drill table wasn’t large enough… Also, federal prison isn't as fun as it sounds. Fire control pocket milled out -, By: Justin / jwh02017 The location of this hole is not extremely critical, so I just scribed a couple lines, punched the hole location and drilled the hole. avoid any possible problems.   III.       - (L) 1 3/16 - 16 Tap The 80% AR15 lower receiver is now 100% complete firearm. The lowest RPM my drill press will go to is 540 RPM. Below is what it looks like after the hole is drilled… I put the (I) #42 aircraft extension drill in my cordless drill and drilled through both ears of the bolt catch area. WMD Guns AR-15 NiB-X Fire Control Group Semi Auto Mil-Spec Nickel Boron Coated WMD Guns AR-15 NiB-X Fire Control Group Semi Auto ... Our Low Price $69.97 QuickView CMMG AR-15 Mil-Spec Trigger Steel Black 55CA7B9 CMMG AR-15 Mil-Spec Trigger Steel Black 55CA7B9. 80% forged receivers I’ve ever seen.       - (E) 3/8 Drill hޤSmkA�+��`��� j�-4��)���Ճ�N�V0��3{&�@Ih��v�yf��G逃��2����,.^(P�����)��XĀ�Y. Mfr Part: MSFCG. Drill trigger, hammer, and selector holes first, then mill the fire control pocket and trigger slot. tutorial, the jig can be used for much more than just drilling the side holes in the lower receiver. Make sure you use plenty of cutting fluid, as it will make turning the tap a whole lot easier. The first line I scribed was the distance from the top of the buffer tower to the center of the 1/2" hole, which was a distance of 1.696”… Below is a pic of the drills & taps I used. Then I took a flat object and made sure the back of the buffer tower was flush with the back of the jig. The optional items in the Tools Used list As I mentioned before, this detent hole is a two-step process. Do not go more than 1/4 of a turn without checking to insure the tap and jig are both still level. Below is a pic showing the jig is level left to right… I decided to use the (E) 3/8 drill next. LJH Member. Depending on how you are planning on finishing your lower, you may or may not need all of these tools. I wanted to use the (D) 5/32 drill first, because usually if you try to use a larger drill into a hole that is already drilled smaller, the larger drill will sometimes chatter since it’s not taking a full cut. This distance was scribed on the front and rear of where the trigger guard pin holes will be… Unlike AR-15, some AR-10 parts are not interchangeable between brands. This distance was 0.487”… This goes back to what I mentioned earlier about using a bigger drill to open up a smaller pre-drilled hole. Like the two previous holes drilled, this set of holes aren’t extremely critical either because one is a clearance hole for the little tab that’s on a buttstock and the other is a detent hole for the rear take down pin. Diagram & Blueprint: Click Although viewing those projects is neat, it’s usually not possible for the average guy to use CNC equipment to complete his lower. To accomplish this, I touched the drill off on the top surface of the jig and locked the spindle in that position… 100-500-152WB AR-15 Fire Control Group Stamped Disconnector. The adapters are sold as sets. Of note, the Anderson's grip screw hole is not threaded all the way through - they have had some issues in the past with these threads stopping very short, and not allowing the use of a 1" long standard grip screw at all. Next I drilled the trigger pin hole… Next I scribed the other line for the 1/2" hole. spec.   - 2x4 piece of wood - 2.50” tall To better support the jig and receiver, I used a Columbian Clamp. www.cncguns.com You may have seen some of the other projects I’ve completed using CNC machining centers. The AR-15 was first built by ArmaLite as a selective fire rifle 1/4-20 socket head cap screws to around So that is why I want to show how somebody can complete an AR15 80% lower with typical tools usually found in their garage. You don’t have to use a clamp, it just makes the job a little easier… Command Pattern Python, John Frieda 10n Discontinued, Wisteria Plants For Sale Near Me, 1 Biscuit In Grams, Wind In The Willows Recipes, Milk Pronunciation Us, Yoox Code Uk, Montauk Downs Hole By Hole, Roasted Sweet Potato Calories Without Skin, Gate Production And Industrial Engineering Syllabus, How To Detox After Eating Too Much Junk, " />

ar15 fire control pocket dimensions

Using the block will insure the area you are about to drill is flat. AR-15 Lower Parts Kits from $49.99 at Palmetto Armory AR-15 Lowers from $84.99 at Stag Arms You don’t have to remove these forging marks, I just think it makes for a better looking lower. Pretty much the same as above from both companies. Joe Miranda. NOTE: This tutorial uses Kevin's older   - Dremel Tool w/ Grinding Stone & Sanding Bands. Unless otherwise stated, every hole is drilled all the way through the receiver. And below is a pic showing the completed safety selector detent hole drilled… The last line to scribe was the distance from the inside of the jig to the center of the detent hole. I bead blasted the lower before I started this tutorial to give a better contrast of where cuts will be made. Full-sized rifles use a fixed buttstock, while carbines generally use an adjustable telescoping buttstock. Dimension shown in ( ) are for reference. M16 Fire Control Group-Full Auto Fire Control Group consists of: Hammer Trigger Disconnector Safety Selector Auto Sear With Pin THESE PARTS ARE INTEND. Next I put the (C) 1/8 drill in the chuck and drilled through the hole until I reached the 3/8 selector hole… AR-15 Fire Control Assembly; AR-15 Front Sight Assembly; AR-15 Gas Tube Assembly; AR-15 Lower Receiver; AR-15 Rear Sight Assembly; AR-15 Sliding Buttstock Assembly; AR-15 Upper Receiver; M16/M4 Lower Receiver - Fire Control - Burst; M16/M4 Lower Receiver - Fire Control - Full Auto; Schematics are the property of, and trademarks are registered to, the individual manufacturers, and …       - (H) 1 1/8 Drill While I had the dremel out, I put on the sanding band and cleaned up the forging marks left in the center of the receiver. If you go too fast, it would be easy to break this small drill off in that deep hole. The drill depth of this detent hole is 1.125” from the center mark surface. and drilled the hole… it. patience.       - (G) 1/2 Drill 33 0 obj <>stream And below is a pic showing the jig level front to back… Now there is an X and Y scribe line and you can simply drill where these two lines cross.   - CNC Gunsmithing Drill Jig Then I used the (G) 1/2" drill to drill down approximately 1/4". They guide the drill and provide precise hole placement so a valuable receiver is not destroyed. Some people get   - 12” Craftsman Drill Press - 5 speeds (540-3600 RPM)  AR15 Parts. If you are interested in installing a burst fire control group in an AR-15 it is not only illegal but impossible due to the differences in the fire control group wells--there is no room for the auto sear. No real reason to make one for the market, you would have to be a FFL 7/02 SOT to manufacture a FA gun if you had a letter to do so. If it was manufactured before then, it in itself is not a machinegun. Now it was time to tap the buffer hole with the (L) 1 3/16-16 tap. I set the jig on the drill press table with the buffer tower facing down, then took my calipers and measured up 1.931” and made a scribe line. You also want to make sure the chips are cleaned off the drill every time you take the drill back into the hole. Below is a pic after all of this was done… IV. h�b```f``���;����Y8�Z00p` QH���2�00s~�w�B�ܤ�����,@��4#w1;�����` �` The 80% project is almost complete.       - (F) #40 Drill You can use a smaller diameter transfer punch, but with the 0.216” you can set it up against the wall where the pistol grip will slide on. The early commercial SP-1 AR-15s used a pair of .250" diameter receiver push pins, identical to those found on the military rifles.   - Columbian Clamp - 15” long There are several manufacturers making kits to allow select-fire with the Lightning Link by modifying real M-16 fire control parts to function with the Lightning Link in an AR-15. best case scenario, it works. Any higher RPM and stuff happens a lot quicker and that’s not always a good thing. If you buy a drop-in auto-sear that was manufactured after November 1st, 1981. it is by itself classified a machinegun, and must be serial numbered and registered with B.A.T.F. The first thing I done was aligned the receiver in the jig. Also note that ownership of a DIAS and AR15 constitutes ownership of a machingun, please abide by the law and use these materials solely for educational purposes. Size Diagram and AR15 blueprint. The headspace shall not be less than 1.4646 inches nor more than 1.4706 inches when measured to the.330 inch datum diameter on the first shoulder of the chamber. %PDF-1.5 %���� V. You no longer need a big milling machine to remove the material from the fire control pocket. I will need the receiver back in the jig to use this method. It uses a (D) 5/32 drill for a depth of 0.188” and a (C) 1/8 drill all the way through the hole until you reach the 3/8 selector switch hole. Related Products. I clamped a flat surface to the top plane of the jig and then scribed a line at 0.250”… below are items that make the job easier, but they aren’t required. Since it would be hard to hit the center mark with the (G) 1/2" drill, I made a little pre-drilled hole with the (F) #40 drill. Tools Used: "store bought" AR15 was it has a silver lower receiver. There is no set in stone rule as to which drills you must begin with. 14 0 obj <> endobj %%EOF It’s a little bigger than what is called out on the blueprint, but in my experience I would rather have this hole a hair bigger because the last thing you want is the spring or detent getting stuck in this blind hole. Here is a pic showing the center mark being punched… I. I set the calipers to 0.818” and referenced the inside of the jig as shown in this pic… or tap to use in each location. Doing this will make If you try to apply a lot of down force on the drill bit, then the drill bit will dig itself in the material and you won’t be able to turn it with your hand. Finishing an 80% AR15 lower is not hard at all. Simply slap jig on the receiver as show below and secure it with a C-clamp. The trigger pocket is also typically milled to different dimensions to prevent the acceptance of an auto-sear as well. Joined: Feb 10, 2008 Messages: 201 Location: Austin TX. Here’s a pic showing that…  After you mark the location and remove the pistol grip, you should have something like this…   II.   - Bubble Level   - Transfer Punch Set I applied cutting fluid to the drill before drilling each hole. Addeddate 2016-02-09 07:52:59 Identifier AR-15_Scratch-Built_Receiver_Blueprint Identifier-ark ark:/13960/t6n056g1g Ocr ABBYY FineReader 11.0 Pages 68 The blueprint can be used for reference The Diagram & Blueprint IV. Complete M-16 Bolt Carrier Group with Nitride Coating. I messed up a 80% 308 lower this way, and it's a more expensive mistake because 308 lowers are generally a lot more expensive than AR lowers (you can already buy AR 80% lowers from Tactical Machining for like 30 dollars) h�bbd``b`�@�q+�`qY> �M@�w�� center of where the safety selector The rear hole goes all the way through, but the front only goes through the right hand side of the receiver. every cut was precise. Leave an allowance of about 0.010” to 0.020” around the pocket.       - (A) 1/4 Drill   - Irwin Quick Grip - 8" & 12” detent hole will be. I also used a 2x4 that was 7.25” long to support under the buffer tower… With this center mark it will give the drill point a place to start. I wasn’t too worried about the life of my CNC jig since I usually machine all of my stuff on a CNC machining center, but if you want to extend the life of your jig, you can use transfer punches to center mark the locations of the holes to be drilled instead of actually drilling through the jig. AR Build 00023 To control the depth of the holes, Modulus Arms includes a drill stop and a template. I used the dremel with a sanding stone and ground a little indention for the clearance. Nitrided M-16 Bolt Carrier Group. The next hole I decided to drill was the front take down pin detent hole. As you probably noticed several of the holes in the AR15 lower receiver are not critical at all. But I will soon give the lower a black anodize finish. This allowance will be machined during the finish pass. III. “The AR-15 is a lightweight, 5.56 mm, magazine-fed, semi-automatic rifle, with a rotating-lock bolt, actuated by direct impingement gas operation or long/short stroke piston operation. Firearms. AR15/AR10 .308 General Information Here is a pic after the hole is drilled… The depth of this hole isn’t critical at all, because it’s just clearance for the little tab on the buttstock… I then used a center punch to mark the locations of the two holes… should hit the center of the selector What are the gun laws of Qatar anyway? With CNC, the machine controls everything, so there’s no human error, thus you can run at higher spindle speeds. I bead blasted the lower before I started this tutorial to give a better contrast of where cuts will be made. In Stock Style: Mil-Spec Details; Q&A (3) Reviews (6) 3.7. All of the internals from the AR15 parts kit fell right into place. | Tutorial, - After about 5 or 6 turns, you should be able to stop checking the tap, because at that point there is no turning back, you will simply have either done it correctly or not. Rev. Instead of scribing the other line, I decided to use a 0.109” diameter transfer punch and set it against the take down pin lug… When drilling this hole, make sure you go SLOW, take small pecks, and use plenty of cutting fluid. Below the trigger slot adapter plate image you will see the milling adapter kit to help you remove the material from the fire control pocket in AR style lowers. Next I drilled the front take down pin hole… If you don’t remove the chips, they will get compacted in the hole and cause the drill to break or The pic below shows the pistol grip on the lower ready to have the hole location marked… It is important to check the drill stop after each hole to ensure you still have the correct depth. I will once again use the 2 line scribe method. And below is what the receiver looks like aligned in the jig ready to be drilled… jig by placing the level on the front 12. Below is a pic of the hammer pin hole being drilled… I used a (F) #40 drill for this hole. All information contained in this tutorial is for educational purposes. To do this I turned the jig upside-down and set it on the edge of the drill press table. The next step in the 80% lower project is to drill the buffer tube hole out to Date: 6/5/07, *** (I have not verified any dimensions) 11-30-2015, 07:45 PM #4. diagram will show you which size drill Then barely start the tap into the hole and insure it stays level with the of the Hole Not that there’s anything wrong with that! on the pics below to download pdf files Lower Parts Kit M16. walk off position. Tim at dumpsterCNC made the 1911 solidmodel *.iges file. There are only two small operations which would make an ar lower select fire capable.       - (J) #3 Drill These dimensions are for milling out the fire control pocket and trigger slot.   V. Conclusion. Joined: Dec 27, 2002 Messages: 981 Location: SE Quad, Penns Woods. Finishing An AR-15 80% Lower Receiver - Fire control pocket milled out - By: Justin / jwh02017 Rev. AR-­‐15 Jig Manual Ver.       - (K) 1/4 - 28 Tap To use them, select the correct drill bit size, place the bit into the template and then tighten the drill stop to achieve the correct drilling depth. Date: 6/5/07 *** NOTE: This tutorial uses Kevin's older style 80% lowers *** Outline: I. receivers that are to end up with the M16 fire control pocket/cavity (which almost all end-users prefer currently) for use by Type 07 FFL's/Class 2 SOT's. Suppressors. These two AR-10 platforms are not the only .308 AR platforms available but they do dominate the market. Take the same precautions when drilling this hole as taken with the front take down pin detent hole… This hole is a two-step process. That said, if you are familier with the blue prints on a M16 it is not hard to free hand one after you have done the fire control pocket to AR … endstream endobj startxref I started with the newer 80% AR15 lower receivers that Kevin is now selling (Email: audibk@yahoo.com) The new 80%'ers Kevin sells has the fire control pocket solid. These new AR15 lower receiver milling adapters allow you to remove the material from the fire control area in AR type lower receivers. There are several ways to complete an 80% lower.       - (I) #42 Aircraft Extension Drill Readme for Scratchbuilt AR15 Receiver Blueprints By elmgrove1765@yahoo.com 1. One adapter allows you to drill the hole locations and the other adapter allows you to remove the material using your drill press. The drill press was operated at the lowest spindle speed of 540 RPM’s throughout this project.       - (D) 5/32 Drill Visually rough out the large pocket of the fire control pocket, but not the rear slot, to a depth of 1.250”. AR-15 Fire Control Group Laser Cut Disconnector. Receiver Extension Dimensions Because I used an A4 rifle in this example, the dimensions of the receiver extension aren’t mentioned. Many companies still sell their lowers with M16 trigger pocket dimensions, they are just missing the proverbial "third-hole".Drilling that third hole is what legally changes your AR-15 from a semi-automatic rifle, into an illegal machine gun.   - 2x4 piece of wood - 7.25” long The jig makes this one of the easiest steps in the 80% project. After a few turns of the tap, you should have something that looks like this… In this tutorial I will demonstrate how easy it is to complete an 80% AR15 lower receiver using the CNC Gunsmithing jig. Here are a couple pics to show you what I’ll be starting with. But to make the job easier I decided to use a transfer punch to make a center mark where the location should be. Unless you are able to get the jig very secure, this size of drill will tend to vibrate and chatter in the hole.       - (B) 13/64 Drill and side of the tap. To scribe the location lines, you’ll need an X and Y measurement, and then you drill where the two lines cross. 10 ft-lbs of torque. As mentioned in the introduction, the steps I took to complete my 80% lower may not be the same steps you take. You will need to set the jig on a flat object so the bolt heads don’t get in the way. Next, I used a flat object and placed it at the rear of the jig and scribed a line at a distance of 2.626”… The only difference I could tell between this AR15 and any other one Basically the idea is to get the jig in a bench vice setting With a little patients anybody can do it. Once I was sure both surfaces were flush, I tightened the two   - Calipers For Class 2 manufacturers to easily and accurately place the holes for factory select-fire components into a previously semi-automatic-only weapon. I know this may sound a little crazy, but it works. This hole DOES NOT go all the way through the receiver. Mfr Part: 709100021520. Below is what it looked like after these holes were drilled… I set the calipers to 1.575” and again referenced the top plane of the buffer tower… Introduction LJH, Feb 22, 2009 #7. AR-15 carbine receiver extensions should be 1.14″ in diameter, also known as “mil-spec” in the advertising world.   - Sharpie Marker As with several other holes in the AR15 lower, the trigger guard pin holes aren’t critical. 26 0 obj <>/Filter/FlateDecode/ID[<456797F027EE644C8899DC2F9D53C321>]/Index[14 20]/Info 13 0 R/Length 73/Prev 45083/Root 15 0 R/Size 34/Type/XRef/W[1 2 1]>>stream I decided to start with the (A) 1/4 drill. Like the previous hole drilled, the location of this detent hole isn’t critical either, so I used the two-line scribe method again. I scribed a line that was 0.748” from the left side of the receiver to the hole location… Tools Used III.   - 3/16 Allen Hex Wrench The next set of holes I drilled were those located on the buffer tower. Introduction II. 1.1 Page 2 Parts Description: Your jig kit consists of a right and left jig wall, a drilling adapter plate, trigger / fire control milling adapter plate, shelf and trigger slot milling adapter plate, four 1” x 1/4” Allen bolts, and AR15 to M16 Class 2 Drilling and Check Fixtures. The CNC jig takes all the guesswork out of finishing this project. Next you need to prop up the buffer tower end with a block that is 2.500” tall.   - Drills & Taps: switch hole. Then I scribed a line for the detent hole. The opposite is the “commercial spec.” To do so is to create an illegal machinegun and can lead to hard prison time. This drill is used for the hammer and trigger pins and also the bolt catch plunger hole. In today's market, Armalite style and DPMS style are the two most popular specification that manufacturers use when making AR-10s. starting the 1/2" drill more forgiving… Even after you have the lower receiver complete you will find ways to use Below is a pic showing my setup during the drilling process… More details. There are easier and harder ways to complete this project, it all depends on what tools you have access to. He sells the nicest 80% forged receivers I’ve ever seen. I drilled the detent hole first with a (F) #40 drill. It is manufactured with the extensive use of aluminum alloys and synthetic materials. View Profile View Forum Posts Stainless Join Date ... but from experience except for the fire control pocket and the mag well it's easier to do it on a manual mill with dro And then why should some one after putting in the work to generate a solid model just throw it out there for every clown to use for free. Too much … Then I drilled the bolt catch plunger hole. Next I used the (D) 5/32 drill. I used the Irwin Quick Grip clamp. Diagram & Blueprint The next hole I decided to drill was the safety selector detent hole. worst case scenario it will mess with your trigger springs a little bit. From the top surface of the jig, you need to drill down 1.500”. If you happen to get this hole off location a little bit, you can simply open up the hole that’s in the pistol grip itself. Tutorial: I started with an 80% AR15 lower receiver from Kevin (Email: Tooling make sure they are good and sharp to Then I set the travel distance of the drill press to 1.500” while the drill bit was still touched off on top of the jig… The hole for the magazine catch was already drilled when I received my 80% lower so I didn’t have to worry about drilling that hole. This unit accurately locates all of the drilling holes for either platform of semi or select-fire. AR15 Lower Receiver Blueprint PDF DOWNLOAD. The Colt AR-15 is a lightweight, ... hammer and fire selector (collectively known as the fire control group). 0 Disclaimer: This article will discuss the process of completing an AR-15 80% lower with common tools found in most hardware stores. The first line I scribed was the distance from the back of the buffer tower to the Here is what it should look like after you have the hole drilled… The BATFE have ruled that no M16 auto or burst parts can be installed in a non-NFA registered lower. So with the (D) 5/32 drill in the chuck, I locked in the spindle with the drill touching the center mark… The next step is to use the (I) #42 aircraft extension drill to drill the bolt catch pin hole. M16 Full Auto Replacement Parts - FTF Industries Inc specializes in MAC Cobray RPB SWD Parts & Accessories, AR15/M16 & AK47 Parts and accessories, Tactical Automatic Knives, Advanced Technology ATI Shotgun Stocks, Gunsmith's Tools & other very unique items. during the project. With the transfer punch against the lug and on the 0.250” scribe line, I made the center mark… This drill is used for the front and rear take down pin holes. This is a little fast for this size of a drill.   I. And here’s a pic showing the center mark… Below is a pic of the rear take down pin hole being drilled… Introduction: 1 1/8” diameter with the (H) 1 1/8" drill. as such. In order to get the next scribe line I had to remove the receiver from the jig, but it’s not a big deal because it’s easy to re-align the receive in the jig. I will again use the 2 line scribe method, but this time there will be 4 sets of lines scribed since there are 2 separate hole locations. Here is a pic showing that… It can all be done right on your drill press. Some people don’t even drill these holes, but I feel having a trigger guard makes for a safer firearm.   - 80% AR15 Lower Receiver Again I locked the spindle in with the (F) #40 drill touching the center marked surface and set the drill depth to 1.125”… Tools Used (���pȦM[,$%#�[M�}x�6��G�c~��l�x/=Ys��)wԭCQ7lR��r����gס ��lZ��$��qsZ��`��!�f�*E�ž�?M0��>¬��r�9��}`�@�'8�m���k�}Q%�ס9g�bQ��Q��p�ǰ� ��C�t��!6-�u�o�HÍ�.�Uϛz�l�z��zTw��yZ�]���iҗ����ߋ3CH����H2�1$=Ϣ��&t䊧�3tRxq�������V���Z�u�2�8���4r�� x'�HIg�2���*LF��wԙ�. So in theory, you really don’t need the 0.748” scribe line if you use the 0.216” diameter punch. The idea to drill and tap this hole is to slide the pistol grip on the lower receiver, and then use a sharpie marker to mark the location of the hole. M16 Parts. I scribed the first line at a distance of 2.430” from the top of the jig to the trigger guard area. Riss Member. I slapped an upper on this new firearm and took it out shooting and I didn’t have any problems at all. After the detent hole is drilled, it M-16 Lower Parts Kit . As you can see in this Again, go slow and use plenty of cutting fluid and you shouldn’t have any problem tapping this hole by hand… endstream endobj 15 0 obj <> endobj 16 0 obj <> endobj 17 0 obj <>stream I drilled both holes while the jig was laying on the left hand side of the receiver. This compact jig assembly is designed specifically for 80% mil. Release Dates June 2002: Scratchbuilt AR15 receiver project completed and test fired Oct 2002-Mar 2003: Incremental release of readme.txt and all 11 parts blueprints: sideleft_rev_A.pdf - rxvr left side plate sideright_rev_A.pdf - rxvr right side plate fcwell_rev_A.pdf - fire control well bottom … The last step is to drill the trigger guard pin holes. Find AR-15 parts and accessories for performance and personalization at affordable prices.   (Optional Items) Be patient when using this method because it’ll only work if you remove a little bit of material at a time.   - Cutting Fluid (WD-40) You don't However, this is not a rule. Jpowers, Feb 22, 2009 #6. To see how well everything lined up, I inserted the (B) 13/64 drill into the jig and it slid right through the receiver without any problems at all. Next, I used the (C) 1/8 drill to drill the front and rear trigger guard pin holes. Tutorial V. Conclusion. So if you need a dimension while working on your project, you will have to reference the model.       - (C) 1/8 Drill Our Low Price $21.97 QuickView CMC AR-15 Drop-In Two Stage Match Trigger Flat Bow 4 lb Pull Black 92504 CMC AR-15 … Then I used the (K) 1/4-28 tap to finish up the hole. Add to Favorites Add to Wish List. The same thing was done for a distance of 4.471”… Andy at Helix60@neo.rr.com made the VZ58 *.iges file. M16, AR-15, M-16, MilSpec quality parts Made in the U.S.A << Back ... M-16 Fire Control Group, 3 position full auto, includes Hammer, Trigger, Selector, and Disconnector for 3 position operation of safe semi and full auto. Colt AR-15 CAD Files Note the following files are for reference only, and are not intended for use in production of an actual firearm or sear. style 80% lowers ***, Outline: This hole goes through to the rear take down pin 1/4" hole. Fire Control Group Pocket (Rear) - Anderson - Aero. Then I set the drill depth to 0.188” See Figure 6. I. The next step was to drill the hole… $8��X� �" �~#�\�^F���ӿ -T Next, it was time to drill and tap the pistol grip hole. 3 years ago. This is a super easy hole to complete because again, it’s not critical. Just be sure to take your time, and always remember to measure twice and cut once. To locate the drill to the pre-drilled hole, I simply kept moving the jig and turning the drill until the drill was even on all sides of the hole. The drop-in auto-sear was designed in the mid 1970's for the sole purpose of converting the AR-15 to fire full-autD (select fire]. when the bolt is closed and the firing mechanism is released, the firing pin indent shall be not less than 0.020 inch. I used all new drills and taps to insure So to solve this problem, I decided to just turn the drill chuck by hand while applying a little down pressure on the drill bit. Upper Parts; Lower Parts; AR 10. I used the (J) #3 drill for the pistol grip hole. Add to Cart. Optics. This drill is used for the safety selector switch hole. So what I demonstrate here may not be the way you finish your 80%’er, but it’s what I thought was the easiest at the time with the tools I had access to in my garage. Conclusion: Perform a full depth finish pass to bring the pocket to its finished dimensions. audibk@yahoo.com) He sells the nicest For reference, an average spindle speed when I run the CNC machines is 10,000 RPM. This includes the (G) 1/2" drill and the (F) #40 drill. have to use new drills, you just need to Below is a pic of this hole being drilled… it level both front to back and side to side. II. I used a 0.216” diameter transfer punch… 3.4.2 Firinq pin indent. When you are done it should look like this…  worried about tapping this hole, but it’s not a big deal at all. Later on, I hope to make available other files dealing with my projects...including sketches, setup sheets, programs, etc. Home; About Us; My Account; Contact Us; Terms and Conditions; Firearm/Suppressor Sales; Hello, Guest | My Account; 0 Items Toggle navigation. So I am confident the lower is in the exact location within the jig. Tutorial   IV. I believe anybody can finish an 80%’er if they have I feel this spindle speed is safe for this type of manual work. Before I drilled these holes, I wanted to make some clearance for the drill on the front trigger guard pin hole. Visit the I had to use a piece of board for the block and jig to set on since my drill table wasn’t large enough… Also, federal prison isn't as fun as it sounds. Fire control pocket milled out -, By: Justin / jwh02017 The location of this hole is not extremely critical, so I just scribed a couple lines, punched the hole location and drilled the hole. avoid any possible problems.   III.       - (L) 1 3/16 - 16 Tap The 80% AR15 lower receiver is now 100% complete firearm. The lowest RPM my drill press will go to is 540 RPM. Below is what it looks like after the hole is drilled… I put the (I) #42 aircraft extension drill in my cordless drill and drilled through both ears of the bolt catch area. WMD Guns AR-15 NiB-X Fire Control Group Semi Auto Mil-Spec Nickel Boron Coated WMD Guns AR-15 NiB-X Fire Control Group Semi Auto ... Our Low Price $69.97 QuickView CMMG AR-15 Mil-Spec Trigger Steel Black 55CA7B9 CMMG AR-15 Mil-Spec Trigger Steel Black 55CA7B9. 80% forged receivers I’ve ever seen.       - (E) 3/8 Drill hޤSmkA�+��`��� j�-4��)���Ճ�N�V0��3{&�@Ih��v�yf��G逃��2����,.^(P�����)��XĀ�Y. Mfr Part: MSFCG. Drill trigger, hammer, and selector holes first, then mill the fire control pocket and trigger slot. tutorial, the jig can be used for much more than just drilling the side holes in the lower receiver. Make sure you use plenty of cutting fluid, as it will make turning the tap a whole lot easier. The first line I scribed was the distance from the top of the buffer tower to the center of the 1/2" hole, which was a distance of 1.696”… Below is a pic of the drills & taps I used. Then I took a flat object and made sure the back of the buffer tower was flush with the back of the jig. The optional items in the Tools Used list As I mentioned before, this detent hole is a two-step process. Do not go more than 1/4 of a turn without checking to insure the tap and jig are both still level. Below is a pic showing the jig is level left to right… I decided to use the (E) 3/8 drill next. LJH Member. Depending on how you are planning on finishing your lower, you may or may not need all of these tools. I wanted to use the (D) 5/32 drill first, because usually if you try to use a larger drill into a hole that is already drilled smaller, the larger drill will sometimes chatter since it’s not taking a full cut. This distance was scribed on the front and rear of where the trigger guard pin holes will be… Unlike AR-15, some AR-10 parts are not interchangeable between brands. This distance was 0.487”… This goes back to what I mentioned earlier about using a bigger drill to open up a smaller pre-drilled hole. Like the two previous holes drilled, this set of holes aren’t extremely critical either because one is a clearance hole for the little tab that’s on a buttstock and the other is a detent hole for the rear take down pin. Diagram & Blueprint: Click Although viewing those projects is neat, it’s usually not possible for the average guy to use CNC equipment to complete his lower. To accomplish this, I touched the drill off on the top surface of the jig and locked the spindle in that position… 100-500-152WB AR-15 Fire Control Group Stamped Disconnector. The adapters are sold as sets. Of note, the Anderson's grip screw hole is not threaded all the way through - they have had some issues in the past with these threads stopping very short, and not allowing the use of a 1" long standard grip screw at all. Next I drilled the trigger pin hole… Next I scribed the other line for the 1/2" hole. spec.   - 2x4 piece of wood - 2.50” tall To better support the jig and receiver, I used a Columbian Clamp. www.cncguns.com You may have seen some of the other projects I’ve completed using CNC machining centers. The AR-15 was first built by ArmaLite as a selective fire rifle 1/4-20 socket head cap screws to around So that is why I want to show how somebody can complete an AR15 80% lower with typical tools usually found in their garage. You don’t have to use a clamp, it just makes the job a little easier…

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