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 … The early commercial SP-1 AR-15s used a pair of .250" diameter receiver push pins, identical to those found on the military rifles. Tutorial V. Conclusion. For Class 2 manufacturers to easily and accurately place the holes for factory select-fire components into a previously semi-automatic-only weapon. 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 wont be able to turn it with your hand. AR15 Lower Receiver Blueprint PDF DOWNLOAD. The Conclusion: With this center mark it will give the drill point a place to start. 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 … There is no set in stone rule as to which drills you must begin with. 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. In this tutorial I will demonstrate how easy it is to complete an 80% AR15 lower receiver using the CNC Gunsmithing 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. diagram will show you which size drill - (I) #42 Aircraft Extension Drill I. I then used a center punch to mark the locations of the two holes AR Build 00023 To control the depth of the holes, Modulus Arms includes a drill stop and a template. Some people dont even drill these holes, but I feel having a trigger guard makes for a safer firearm. Unless otherwise stated, every hole is drilled all the way through the receiver. The 80% project is almost complete. I used all new drills and taps to insure 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 … Date: 6/5/07, *** - Drills & Taps: This distance was scribed on the front and rear of where the trigger guard pin holes will be Riss Member. What are the gun laws of Qatar anyway? 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. 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. Joined: Feb 10, 2008 Messages: 201 Location: Austin TX. Finishing an 80% AR15 lower is not hard at all. This is a little fast for this size of a drill. Upper Parts; Lower Parts; AR 10. I know this may sound a little crazy, but it works. Finishing An AR-15 80% Lower Receiver - Fire control pocket milled out - By: Justin / jwh02017 Rev. This distance was 0.487 %%EOF
Dimension shown in ( ) are for reference. After you mark the location and remove the pistol grip, you should have something like this The next step is to use the (I) #42 aircraft extension drill to drill the bolt catch pin hole. Here is what it should look like after you have the hole drilled It can all be done right on your drill press. 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. You no longer need a big milling machine to remove the material from the fire control pocket. Here is a pic after the hole is drilled To do so is to create an illegal machinegun and can lead to hard prison time. Depending on how you are planning on finishing your lower, you may or may not need all of these tools. - (L) 1 3/16 - 16 Tap But to make the job easier I decided to use a transfer punch to make a center mark where the location should be. as such. Below is a pic after all of this was done Next I drilled the trigger pin hole Introduction I drilled the detent hole first with a (F) #40 drill. You will need to set the jig on a flat object so the bolt heads dont get in the way. Doing this will make - (A) 1/4 Drill So what I demonstrate here may not be the way you finish your 80%er, but its what I thought was the easiest at the time with the tools I had access to in my garage. Then I scribed a line for the detent hole. 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. - Bubble Level - Cutting Fluid (WD-40) AR-15 Lower Parts Kits from $49.99 at Palmetto Armory AR-15 Lowers from $84.99 at Stag Arms Next I used the (D) 5/32 drill. 0
Then barely start the tap into the hole and insure it stays level with the The optional items in the Tools Used list of the Hole 1/4-20 socket head cap screws to around Introduction: when the bolt is closed and the firing mechanism is released, the firing pin indent shall be not less than 0.020 inch. From the top surface of the jig, you need to drill down 1.500. The jig makes this one of the easiest steps in the 80% project. There are easier and harder ways to complete this project, it all depends on what tools you have access to. Disclaimer: This article will discuss the process of completing an AR-15 80% lower with common tools found in most hardware stores. AR15/AR10 .308 General Information This goes back to what I mentioned earlier about using a bigger drill to open up a smaller pre-drilled hole. Andy at Helix60@neo.rr.com made the VZ58 *.iges file. With the transfer punch against the lug and on the 0.250 scribe line, I made the center mark Add to Favorites Add to Wish List. spec. However, this is not a rule. 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. In today's market, Armalite style and DPMS style are the two most popular specification that manufacturers use when making AR-10s. Now there is an X and Y scribe line and you can simply drill where these two lines cross. The first line I scribed was the distance from the back of the buffer tower to the The drill depth of this detent hole is 1.125 from the center mark surface. Below is a pic of the drills & taps I used. 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. Tools Used III. Below is a pic of the hammer pin hole being drilled make sure they are good and sharp to Below is a pic of this hole being drilled 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. Unless you are able to get the jig very secure, this size of drill will tend to vibrate and chatter in the hole. The drill press was operated at the lowest spindle speed of 540 RPMs throughout this project. I used a (F) #40 drill for this hole. 26 0 obj
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The rear hole goes all the way through, but the front only goes through the right hand side of the receiver. 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. - 2x4 piece of wood - 7.25 long The location of this hole is not extremely critical, so I just scribed a couple lines, punched the hole location and drilled the hole. The next set of holes I drilled were those located on the buffer tower. Visit the - Transfer Punch Set Leave an allowance of about 0.010” to 0.020” around the pocket. This hole is a two-step process. 80% forged receivers Ive ever seen. Again, go slow and use plenty of cutting fluid and you shouldnt have any problem tapping this hole by hand The depth of this hole isnt critical at all, because its just clearance for the little tab on the buttstock I feel this spindle speed is safe for this type of manual work. Here is a pic showing the center mark being punched 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. I will once again use the 2 line scribe method. Then I used the (K) 1/4-28 tap to finish up the hole. center of where the safety selector have to use new drills, you just need to Then I took a flat object and made sure the back of the buffer tower was flush with the back of the jig. All of the internals from the AR15 parts kit fell right into place. Once I was sure both surfaces were flush, I tightened the two Next, I used the (C) 1/8 drill to drill the front and rear trigger guard pin holes. - (H) 1 1/8 Drill LJH, Feb 22, 2009 #7. Tools Used I will need the receiver back in the jig to use this method. So in theory, you really dont need the 0.748 scribe line if you use the 0.216 diameter punch. III. Some people get Next I put the (C) 1/8 drill in the chuck and drilled through the hole until I reached the 3/8 selector hole III. - Columbian Clamp - 15 long 10 ft-lbs of torque. should hit the center of the selector Before I drilled these holes, I wanted to make some clearance for the drill on the front trigger guard pin hole. The next step was to drill the hole Simply slap jig on the receiver as show below and secure it with a C-clamp. 33 0 obj
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every cut was precise. AR15 to M16 Class 2 Drilling and Check Fixtures. Suppressors. jig by placing the level on the front - CNC Gunsmithing Drill Jig Fire control pocket milled out -, By: Justin / jwh02017 100-500-152WB AR-15 Fire Control Group Stamped Disconnector. IV. And heres a pic showing the center mark style 80% lowers ***, Outline: Here is a pic showing that - Sharpie Marker (���pȦM[,$%#�[M�}x�6��G�c~��l�x/=Ys��)wԭCQ7lR��r����gס
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x'�HIg�2���*LF��wԙ�. 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 You dont have to use a clamp, it just makes the job a little easier He sells the nicest 80% forged receivers I’ve ever seen. Fire Control Group Pocket (Rear) - Anderson - Aero. This hole goes through to the rear take down pin 1/4" hole. Tutorial: I started with an 80% AR15 lower receiver from Kevin (Email: When drilling this hole, make sure you go SLOW, take small pecks, and use plenty of cutting fluid. II. 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. I. I slapped an upper on this new firearm and took it out shooting and I didnt have any problems at all. The same thing was done for a distance of 4.471 Pretty much the same as above from both companies. - (F) #40 Drill Heres a pic showing that With CNC, the machine controls everything, so theres no human error, thus you can run at higher spindle speeds. 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. Below is a pic showing my setup during the drilling process And below is a pic showing the jig level front to back switch hole. The hole for the magazine catch was already drilled when I received my 80% lower so I didnt have to worry about drilling that hole. I had to use a piece of board for the block and jig to set on since my drill table wasnt large enough AR-15 Fire Control Group Laser Cut Disconnector. The pic below shows the pistol grip on the lower ready to have the hole location marked The BATFE have ruled that no M16 auto or burst parts can be installed in a non-NFA registered lower. 3.4.2 Firinq pin indent. | Tutorial, - I scribed a line that was 0.748 from the left side of the receiver to the hole location M16 Fire Control Group-Full Auto Fire Control Group consists of: Hammer Trigger Disconnector Safety Selector Auto Sear With Pin THESE PARTS ARE INTEND. 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. All information contained in this tutorial is for educational purposes. As I mentioned before, this detent hole is a two-step process. Nitrided M-16 Bolt Carrier Group. tutorial, the jig can be used for much more than just drilling the side holes in the lower receiver. V. For reference, an average spindle speed when I run the CNC machines is 10,000 RPM. 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. And below is what the receiver looks like aligned in the jig ready to be drilled Then I used the (G) 1/2" drill to drill down approximately 1/4". I believe anybody can finish an 80%er if they have The lowest RPM my drill press will go to is 540 RPM. NOTE: This tutorial uses Kevin's older And below is a pic showing the completed safety selector detent hole drilled - (K) 1/4 - 28 Tap M-16 Lower Parts Kit . - (C) 1/8 Drill To scribe the location lines, youll need an X and Y measurement, and then you drill where the two lines cross. best case scenario, it works. - (B) 13/64 Drill I bead blasted the lower before I started this tutorial to give a better contrast of where cuts will be made. I set the calipers to 0.818 and referenced the inside of the jig as shown in this pic Not that there’s anything wrong with that! Any higher RPM and stuff happens a lot quicker and thats not always a good thing. 1 1/8 diameter with the (H) 1 1/8" drill. You also want to make sure the chips are cleaned off the drill every time you take the drill back into the hole. Later on, I hope to make available other files dealing with my projects...including sketches, setup sheets, programs, etc. Receiver Extension Dimensions Because I used an A4 rifle in this example, the dimensions of the receiver extension aren’t mentioned. Optics. It is manufactured with the extensive use of aluminum alloys and synthetic materials. Diagram & Blueprint IV. Visually rough out the large pocket of the fire control pocket, but not the rear slot, to a depth of 1.250”. The next hole I decided to drill was the front take down pin detent hole. The trigger pocket is also typically milled to different dimensions to prevent the acceptance of an auto-sear as well. Tooling This drill is used for the front and rear take down pin holes. www.cncguns.com You may have seen some of the other projects Ive completed using CNC machining centers. There are only two small operations which would make an ar lower select fire capable. This hole DOES NOT go all the way through the receiver. h�bbd``b`�@�q+�`qY> �M@�w�� The next step in the 80% lower project is to drill the buffer tube hole out to Then I drilled the bolt catch plunger hole. I used the (J) #3 drill for the pistol grip hole. Find AR-15 parts and accessories for performance and personalization at affordable prices. This is a super easy hole to complete because again, its not critical. - 2x4 piece of wood - 2.50 tall Be patient when using this method because itll only work if you remove a little bit of material at a time. 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 … I wasnt 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. The Colt AR-15 is a lightweight, ... hammer and fire selector (collectively known as the fire control group). Drill trigger, hammer, and selector holes first, then mill the fire control pocket and trigger slot. I decided to start with the (A) 1/4 drill. As you can see in this The blueprint can be used for reference I set the calipers to 1.575 and again referenced the top plane of the buffer tower 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. it level both front to back and side to side. Below is what it looks like after the hole is drilled Take the same precautions when drilling this hole as taken with the front take down pin detent hole Mfr Part: 709100021520. IV. Then I set the drill depth to 0.188 You dont have to remove these forging marks, I just think it makes for a better looking lower. Even after you have the lower receiver complete you will find ways to use In Stock Style: Mil-Spec Details; Q&A (3) Reviews (6) 3.7. walk off position. (Optional Items) Joined: Dec 27, 2002 Messages: 981 Location: SE Quad, Penns Woods. I put the (I) #42 aircraft extension drill in my cordless drill and drilled through both ears of the bolt catch area. Diagram & Blueprint: Click I also used a 2x4 that was 7.25 long to support under the buffer tower - (G) 1/2 Drill After a few turns of the tap, you should have something that looks like this Also, federal prison isn't as fun as it sounds. Again I locked the spindle in with the (F) #40 drill touching the center marked surface and set the drill depth to 1.125 starting the 1/2" drill more forgiving I bead blasted the lower before I started this tutorial to give a better contrast of where cuts will be made. Related Products. 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 its not taking a full cut. To do this I turned the jig upside-down and set it on the edge of the drill press table. Readme for Scratchbuilt AR15 Receiver Blueprints By elmgrove1765@yahoo.com 1. Next I scribed the other line for the 1/2" hole. I. Too much … Lower Parts Kit M16. - Dremel Tool w/ Grinding Stone & Sanding Bands. and side of the tap. Just be sure to take your time, and always remember to measure twice and cut once. below are items that make the job easier, but they arent required. 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 %PDF-1.5
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3 years ago. (I have not verified any dimensions) 11-30-2015, 07:45 PM #4. Full-sized rifles use a fixed buttstock, while carbines generally use an adjustable telescoping buttstock. 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. 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. Like the two previous holes drilled, this set of holes arent extremely critical either because one is a clearance hole for the little tab thats on a buttstock and the other is a detent hole for the rear take down pin. 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. Unlike AR-15, some AR-10 parts are not interchangeable between brands. These new AR15 lower receiver milling adapters allow you to remove the material from the fire control area in AR type lower receivers. I applied cutting fluid to the drill before drilling each hole. As with several other holes in the AR15 lower, the trigger guard pin holes arent critical. 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 Next you need to prop up the buffer tower end with a block that is 2.500 tall. You don't To accomplish this, I touched the drill off on the top surface of the jig and locked the spindle in that position II. on the pics below to download pdf files The next hole I decided to drill was the safety selector detent hole. These dimensions are for milling out the fire control pocket and trigger slot. "store bought" AR15 was it has a silver lower receiver. This includes the (G) 1/2" drill and the (F) #40 drill. This compact jig assembly is designed specifically for 80% mil. But I will soon give the lower a black anodize finish. it. Now it was time to tap the buffer hole with the (L) 1 3/16-16 tap. Firearms. 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. In order to get the next scribe line I had to remove the receiver from the jig, but its not a big deal because its easy to re-align the receive in the jig. 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