This is not a second just not completed to be called a lower receiver, or considered a firearm. All Rights Reserved. For step-by-step video instructions on finishing your AR-10 or AR-15 80% Lower with our Jig Kit, go here. Provides clean cuts: Although not as precise as a mill or drill press, the router, when used in tandem with the appropriate jig, provides clean cuts and a smooth finish with relative ease. 308 PARTS. This article was originally published in ‘Gun Buyer’s Annual’ 2017. Follow the jig instructions to make sure you are using the correct size bit for each hole. At some point, a machined block of material will cross an invisible threshold and become a legal firearm that must have a serial number and be transferred through a federal firearms licensee. These lowers must be transferred through a firearms dealer like any other gun. We're covering the four ways you can cut and drill your receiver to make your homemade AR-15 stripped lower: Unless you have access to a commercial-grade CNC machine with precise CAD drawings and measurements of an AR-15 receiver, you'll need to stick with using an 80% jig. (Only one template bolts to the top at a time.) But I will soon give the lower a black anodize finish. 80% MILLING JIG FOR AR-15/9MM DISCLAIMER: These instructions are intended for use by someone who has knowledge of machining and machine tooling necessary to complete an 80% receiver. While the term “80-percent lower” has no legal definition, it is a term frequently used in the industry to refer to a piece of aluminum or polymer that has not been machined enough to become a firearm. Even though the jig is intended to be used with handheld tools, I recommend using a drill press for the holes on an aluminum lower. Since an 80-percent lower is not a firearm, it can be ordered and delivered through the mail like any other non-firearm part. To do this, hand-fit a 3/32″ drill bit into the hole. However, I’ve found that reality doesn’t always align with theory when it comes to 80-percent lowers. E P ARMORY ATF GRAB BAG SMALL (2) Your Price: $25.00 In Stock. It's the most accurate: The mill's adjustment knobs for vertical and lateral movements are often as precise as 0.0001", allowing for incredibly clean cuts without damaging your 80% jig or wearing our your bits. Quicker than a drill press: Using a drill press will take approximately 1 to 2 hours' time to complete your receiver, while a router can get the job done in approximately 30 minutes to 1 hour. This could be considered a redundant method of machining, since you can complete the entire receiver with only a drill press. 80% AR-15 jigs help the home builder or DIY type complete their 80% AR15 receiver 80% AR-15 Jigs | Tactical Machining JavaScript seems to be disabled in your browser. milling a 80% lower with fairly common tools, first vid of two parts showing the build of a AR15. Treat it as such, as you are now responsible for it just as if you purchased a complete rifle at your local gun shop. Then slide the pivot pin into the lower, being careful to align the trench on it with the detent. Remove the jig from the vise. Once the first pass is done, move the bit to the next depth as indicated on the depth template and repeat the process. E P ARMORY ALUMINUM JIG FOR AR15 80 LOWER (9) Your Price: $89.99 In Stock. This is where the router comes into play. At this point, you will remove the drilling template from the top of the … AR-15 80 Percent Lower Receivers. All you need is a drill press or a mill. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, New Jersey, New York, Rhode Island, and Washington). To do this, you need a pivot pin, a pivot pin detent and a pivot pin detent spring. May be redundant: Even though you'll use a router to cut your receiver, you still need a drill press to properly drill the pin holes into the walls of the receiver for your parts kit. 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To keep the lower receiver within tolerance, pay close attention to the tolerances as you machine. Ghost Gunner is a general purpose CNC mill that gives you the ability to finish a growing library of mil-spec 80 percent lowers to completion. When drilling, you want to keep a small brush and shop vacuum handy to clean up the debris. Enjoy FAST SHIPPING and SAVE at 80-lower.com today! The jig should now be on its side. Complete the necessary pilot holes and complete the rest of the cavity with the end mill bit. Some of the holes are of different sizes and depths. Very light milling passes can be made with the appropriate chuck on your press in order to smooth out the aluminum face on the interior walls of the receiver, too. Posted by AR-15LowerReceivers.com on Jul 7th 2020. Read our intro guide first. If you are finishing an aluminum lower, I’ve found that a handheld drill takes much longer than it does with a polymer lower. Notice the solid area where the trigger would go, making it a paperweight, not a firearm. Finishing an 80% AR15 lower is not hard at all. M1 Machining is the industry standard in high quality AR10 & AR15 lower receivers. A drill press is the most affordable method for completing an 80% lower. 80 percent lower receiver No FFL required and All machine work that has been done is within Mil-Spec specifications. Obscures the work area. This instructional guide's shows you how to complete an 80% lower using the Elite Builder 80% Jig and a basic drill press or mini-mill. Now that you have made the wise decision to purchase the new Juggernaut Tactical AR-15 80% Lower Receiver, you will need to finish the machining procedure. For written instructions, go here. No prior CNC knowledge or experience is required to manufacture from design files. A drill press provides a stable, fixed machining platform for completing your 80% lower receiver. Place the jig assembly on its side (Side Plate screw heads UP), and use the 3/8″ Drill Bit to drill the … These instructions are meant to give you some direction in completing your Optimus Defense 80% Lower Receiver. E P ARMORY ATF GRAB BAG MEDIUM (1) Your Price: $50.00 In Stock ready to Ship . How to machine a hunk of steel or polymer into a working AR-15 lower receiver. I purchased my eparmory 80% lower … A drill press is the most affordable method for completing an 80% lower. TIP #3: I have found that polymer lowers do not need a drill press to be completed with the Modulus Arms jig. Meanwhile, an 80% lower is technically not a firearm until you finish machining it, so you can get them delivered straight to your house without paying FFL fees. 80% MILLING JIG FOR AR-15/9MM DISCLAIMER: These instructions are intended for use by someone who has knowledge of machining and machine tooling necessary to complete an 80% receiver. ANDERSON MANUFACTURING 80% LOWER RECEIVER JIG -SUGGESTED METHOD- Step #2: Install Template 1 as shown in the picture on the previous page using provided screws. Do not drill all the way through the receiver—only drill the top half of the receiver. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. To control the depth of the holes, Modulus Arms includes a drill stop and a template. 80 Percent Arms Easy Jig Gen-2 Compatible Premium Upgrade AR-15 Lower Jig "TiN" Drill Bit Kit $ 25.99 CNC Tooling Kit for Milling the Firing Pocket of a AR15-AR10 .308 Lower Receiver Using the milling and depth templates, set up the router for the proper depth and mill out the trigger hole in the same manner you did the fire control pocket. If you were using WD40 or a cutting fluid, the lower is probably a bit oily, so wipe it down with a bit of degreaser or other cleaner before continuing. Using the second Brownells tool, press the detent into the hole and rotate the tool so that the detent is captured in the hole on the lower and under the tool. It is the end user's responsibility to determine if finishing an 80% receiver is permitted by law in their state and/or municipality. As you probably noticed several of the holes in the AR15 lower receiver are not critical at all. This jig and these instructions work for any AR-15 (5.56, .223, 300 BLK) and AR9 (9mm) 80% lower. Specifications: Hole Sizes: Selector Pin Hole: 3/8” (0.375”) We have made that part of your personal rifle build project very easy with this high quality jig kit. Then indicate the forging true to the x axis. To complete the lower you will be drilling multiple holes and routing two pockets. Jigs and tools to complete 80 percent lowers for your rifle. Chapter 2 The First Setup With forgings (as well as castings and weldments) that require final precision machining, the big problem is where to start. We specialize in stripped and 80% lower receivers for complete custom builds. Once the router is up to speed, begin to connect the holes with short circular motions. Buy Now. Follow the Modulus Arms instructions on inserting the screw. A mill is the most expensive choice: The most affordable mini-mill, like the Sieg X2, will cost between $550 and $750, with more expensive units approaching $1,000 to $1,500. PF940V1.5 80% Pistol Frame • PF940V1.5 80% Polymer Pistol Frame Instructions (PDF): Click Here . For purposes of clarity, I consent to Athlon's collection, storage, processing, and transfer of my Personal Data and Non-Personal Data (as defined in the Privacy Policy) for the purpose of signing up for the email newsletter. Using the drill press in tandem with a center-cut end mill bit (which is included with the 80% jig you'll purchase for your lower), you can complete the bulk of the fire control cavity using the provided drill bits and pilot hole template, followed by making vertical plunge cuts with the end mill to smooth out the floor of the receiver. Optimus Defense 80 % lower receiver does n't require much experience or knowledge of tooling cutting drilling... 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