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Cutting fluid is a must if you want to keep your bits cool and sharp while machining aluminum. If you’re a beginner or a custom AR builder seeking maximum finish quality, you should make milling passes at less than a full hash mark. After completing that step, loosely install the takedown adapter to the guide plate using the provided jig screws while ensuring that you’re using the right colored adapters for your specific AR build. It’s now time to tighten the jig screws to secure the buffer plate and takedown adapter. SHOP JMT; JMT PRODUCTS. Prior to turning the router on, ensure that the end mill is centered within the milling pilot hole and not contacting any part of the receiver. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, New Jersey, New York, Pennsylvania, and Washington). Get assembly instructions here. Light passes must be made in this case. Align the other plate then set the assembly upright. Congratulations! www.cncguns.com You may have seen some of the other projects I’ve completed using CNC machining centers. Don't over-tighten these countersunk screws; they can strip easily. Now, you're the proud owner of a real AR-15 stripped lower receiver. Inspect the receiver for debris and clean as needed. Use 3/8 dia. A drill press is the most affordable method for completing an 80% lower. Take your time and drill down incrementally. With our 80% lower jig, comprehensive instructions and how-to videos, you control production quality by performing the work firsthand. Set your receiver on one plate and align the pins. First, clean the surface of the 80% lower receiver and apply masking tape to the sides before applying the buffer plate to the back of the receiver. By far the most common way is to complete the 80 lower with a jig. One of the most modified parts is the lower receiver and there is a whole sub-market of 80% lower receivers, ready for you to finish. Carbon 50 AR-15 80% Lower; AR-15 80% Polymer Lower; Carbon 50 .308 80% Lower milling process. Remove the drill bit from your machine. Tactical Machining does offer a router jig kit that allows our standard 80 lower jig to be completed with a router and a drill press. Check out our detailed lower parts kit assembly guide! Again, don't apply too much pressure to the jig or the plates will warp. SHOP 80% LOWER RECIEVERS. When you start drilling, apply moderate pressure until the drill penetrates the right side wall and continue drilling through the left side. Remove #1 plate, replace with #2 plate. 80% AR15/AR10/.308 Jig Specific Instructional Video's 80% AR15/AR10/.308 Jig Specific Instruction s AR15/AR10/.308, Schematics AR15/AR10/.308, Blueprints AR-15 Lower Receiver Parts Breakdown AR15-Type Rifle Exploded Diagram AR15 - Detailed Step By Step Assembly / Build Instructions To complete the lower you will be drilling multiple holes and routing two pockets. Apply cutting fluid to the remaining bushings, and drill through the receiver twice more to complete the trigger and hammer pin holes. 2. It's labelled "3/8 EM 1.375 DEEP FROM THIS FACE.". Reposition the jig and receiver horizontally, so the right side plate's drill bushings are facing up. 1.1 Page 8 (Fig. Only start the drill when you’re sure that the bit is fully inserted into the guide hole. How to assemble the 5D Tactical Router Jig. We are backordered and our shop is working 24/7. Remove the 3/8" bit and replace it with the 5/32" bit. 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. 80 LOWER MACHINING MANUALS JMT AR-15 Polymer 80 Machining Instructions. Replace it with the next template, which is the first cutting template. 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. A brush or canned air will help to keep your work area free of debris and aluminum chips. Most portable style drill … Using the provided large Allen key and hex-head bolts, tighten the holder to the jig. Anderson Manufacturing is not responsible for machining errors or injuries incurred during the completion of the 80% lower receiver. We're now cutting the lower part of the cavity, where the trigger and hammer will install. Receivers with spray-on coatings like Duracoat and Cerakote should be drilled from both sides for maximum finish quality. The EB Jig's end mills are also center-cut. In another thread somewhere I thought I recalled someone posting that there was a shop with a CNC machine and the owner would let Joe Public bring in his 80% lower, have Joe put it in his machine which was already setup and programmed to finish the milling work, then Joe pushes the green button for a machine rental fee. As long as you followed instructions and set your depths correctly, your lower parts kit and trigger will install just fine. Once the cavity has been cut to 1.375", remove the template and short end mill from the workspace. Our Phone Staff is working on fulfilling your orders! Two polished steel pins located on the jig's plates will align with the pivot and takedown holes at the front and rear of the receiver. Install the fourth template labelled "5/16 EM THRU BOTTOM." Ready to build your own AR-15 rifle or pistol from scratch? Then install the 115 bit on the Dremel and begin milling. Orders are shipping in 4 to 8 weeks. While milling, you’ll want to move the router smoothly and in a clockwise manner as shown in the 80% lower jig instructions. Ensure that the jig assembly is level and spray WD-40 into the large guide hole and insert 3 /8” drill bit. As the pilot hole template indicates, we need to drill down 2.00" from the surface of the plate. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative. Keep the router adapter flat against the router guide plate at all times. Everything You Need To Build An 80% Lower Receiver . Anderson Manufacturing is not responsible for machining errors or injuries incurred during the completion of the 80% lower receiver. Unlike a milling machine, the spindle and chuck in a drill press aren't designed to accept high lateral loads (side-to-side pressure). Cast. Shop 5D Tactical for the best parts to complete your custom AR build! Set your drill stop on your mill or drill press accordingly. © 2020 80lowerjig.com, a division of Tactical Gear Heads, LLC. We are The Masters of the Black Arts of Tooling ™.This tool kit is the industry’s first that is specially designed and manufactured to optimize the machining of personal built lower receivers.
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