It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative. Before getting started, we also need some hand tools. Use plenty of cutting fluid and occasionally remove the bit from the work to clean the receiver and bit of aluminum debris.Drill down 2.00" from the face of the template until all six pilot holes have been made. 80% Lower Receivers for AR-15 & AR 308. For this guide we're completing a forged AR-15 80% lower.These steps also apply to completing a billet and AR9 lower. The R&B Tactical Tooling 80% Lower Receiver Cutting Tool Kit was created, designed and manufactured by us. Place the jig assembly on its side (Side Plate screw heads UP), and use the 3/8″ Drill Bit to drill the … Read the complete document before proceeding. Make sure to periodically pull the drill out of the guide hole to clear any chips. Reposition the jig and receiver horizontally, so the right side plate's drill bushings are facing up. Read the complete document before proceeding. Then install the 115 bit on the Dremel and begin milling. Anderson Manufacturing is not responsible for machining errors or injuries incurred during the completion of the 80% lower receiver. Reapply machining oil for the next cutting procedure. In case your drill bits are not long enough to penetrate through both walls, flip the jig over and repeat the process. Align your lower receiver with the takedown adapter and pass the correct takedown pin through the receiver and adapter. Ensure that your router base lock is tight and functioning properly. Anderson Manufacturing is not responsible for machining errors or injuries incurred during the completion of the 80% lower receiver. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative. We're also using the popular Elite Builder Jig, which comes with end mill bits and drill bits.These instructions will cover how to complete your 80% lower using either a drill press or milling … A milling machine is the most effective and precise method for both cutting and drilling. Still, many machinists safely mill their 80% lowers using a drill press. Review the 80% lower jig instructions carefully to avoid any damage. Attempting to mill at depth increments higher than what is recommended can cause damage to the end mill or receiver. We're using a standard forged 80% lower. 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. Visit http://bit.ly/2x8GxEH to pick up the items to machine your own 80% lower receiver. Take care not to drill too far, or you may damage your vise or table. Removing them could result in poorly drilled pin holes. Also make sure that the holes in the rear of the guide plate align with the buffer plate, and then loosely install the jig screws. Both are reusable for additional builds. We provide all the jigs and tools necessary to complete 80 percent lowers! Carbon 50 AR-15 80% Lower; AR-15 80% Polymer Lower; Carbon 50 .308 80% Lower 308 PARTS. We're using this forged receiver with engraved "FIRE/SAFE" markings. In this tutorial I will demonstrate how easy it is to complete an 80% AR15 lower receiver using the CNC Gunsmithing jig and the milling adapter kit. Drill Press. To ensure smoother drilling, spray WD-40 into the router drill attachment and insert a 21/64” drill bit. 6. The gray buffer plate provided is for AR-15/AR-9 receivers while the black buffer plates are for .308/AR-10 receivers. 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. No prior CNC knowledge or experience is required to manufacture from design files. AR15 PARTS. Begin drilling while making sure that the drill bit is kept straight and perpendicular to the receiver. In addition to cutting costs, our 80% lower jig puts you in control of the work, letting you ensure the job is done perfectly to finish the receiver for your next build. If the router depth moves while milling, the end mill or the receiver can be damaged. These instructions are meant to give you some direction in completing your Optimus Defense 80% Lower Receiver. Congratulations! Install the 5/16" end mill and cut through the receiver to make the trigger slot. Rifles 80% lower receiver. Beyond a certain point there is patches of ribbing that are the same color as the lower. 1.1 Page 8 (Fig. To start off, you need to understand how to assemble your jig correctly. Most portable style drill … Don’t insert or remove the end mill while the router is spinning. Some of the interesting things about this kit are that all of the tool and the required jig are included, and the polymer is a lot easier to mill out for a first time 80% build. RJ556U Universal Jig for Milspec 80% AR-15 Lower Receivers • RJ556U Instructions PDF: Click Here .308 WarrHogg Lower Receiver • WarrHogg instructions (PDF): Click Here . Unlike a milling machine, the spindle and chuck in a drill press aren't designed to accept high lateral loads (side-to-side pressure). You have to make sure you have the right parts picked out for your build. That's okay. Only tighten the vise enough to prevent the jig from sliding or moving while you work. 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 Light passes must be made in this case. Before cutting the receiver to make room for the parts kit, we're going to drill pilot holes using the kit's 3/8" drill bit. While milling, you’ll want to move the router smoothly and in a clockwise manner as shown in the 80% lower jig instructions. Unlike a milling machine, the spindle and chuck in a drill press aren't designed to accept high lateral loads (side-to-side pressure). To keep the lower receiver within tolerance, pay close attention to the tolerances as you machine. Forged vs. Polymer vs. When you start drilling, apply moderate pressure until the drill penetrates the right side wall and continue drilling through the left side. Make sure to follow the steps provided with your 80% lower jig instructions so you can do it correctly. There are three main milling steps in the instructions which start with installing the short guide pins to the router adapter using the provided guide pin screws and 7/64” Allen wrench, eventually working your way up to the medium and long guide pins to finish your milling process. Repeat the same process for the remaining small hole. Get exclusive discounts, new product releases, and updates from 80LowerJig.com, before anyone else! This document is intended to give a basic direction or guidance when ... You may use milling machine, drill press, router, rotary tool, or … We are a national retailer of individual components and not all products depicted on this website are legal in every state. Then indicate the forging true to the x axis. Posted by 80 Lower Jig, Co. on Sep 2nd 2020. Here, we’re going to discuss the basic 80% lower jig instructions that you should follow when it comes to ensuring easy and safe use of our Router Jig PRO during the drilling and milling process. As outlined in the 80% lower jig instructions, don’t start the drill until you’re sure the bit is fully inserted. Align the other plate then set the assembly upright. It's labelled "3/8 EM 1.375 DEEP FROM THIS FACE.".