As outlined in the 80% lower jig instructions, don’t start the drill until you’re sure the bit is fully inserted. Use the 1/4″ End Mill at a mid-range RPM and then slowly trace around the outside perimeter of the small slot in the Drilling Top Plate – Remove the Drilling Top Plate. Begin drilling while making sure that the drill bit is kept straight and perpendicular to the receiver. Proudly Made in the United States of America, ​How to Build An 80% Lower: Beginners Guide. With the jig secure, it’s time to install the template plate holder. But since the founding of the Constitution, we’ve witnessed countless caveats come into play, along with immense difficulty in purchasing or selling firearms throughout the country. The drill bushings ensure every pin hole is aligned. that once you Keep in mind start drilling, milling, or altering your 80% lower it becomes a … 80 LOWER MACHINING MANUALS JMT AR-15 Polymer 80 Machining Instructions. Replace the plate with the included milling template, marked “3/8 EM 1.375 Deep From This Face.”. With the tools you need on-hand, it’s time to tackle your first 80% lower build. Progress Check – when you are done drilling the correct number of 3/8″ holes, your 80% Lower should look like the image above. PF940V2™ Pistol Frames, 80% Instructions Table of Contents ... Barrel Block Milling Procedure ... PF940V2 Pistol Frame Lower PF80-PF940V2 1 Red Jig for the PF940V2 P80-PG940V2-JIG 1 Locking Block Rail System Pin, 3mm diameterx25mm long MSC-PFP-PIN-3MM 1 You may remove both the jig and the lower from your vise and position the entire assembly horizontally for further drilling. Drill entirely through the sides of the receiver via the right side plate. Now, drill down 2.000” deep into the receiver from the face of the top template plate. SHOP JMT; JMT PRODUCTS. STEP 5 – With the jig assembly standing upright, start drilling with the 5/32″ Drill Bit at every hole shown above as Green. Check out the product page for videos of how simple it really is, or our instruction manual page to see how simple we have made all of our products. The final step, now with the receiver and jig horizontally placed, is to drill the hammer, trigger, and safety pinholes. Use the 3/8″ End Mill at a mid-range RPM and start milling the small section between the FCG main pocket and upper Lug pocket going to a total depth of 0.630″. Since (4) of the 1/8 diameter holes fall on the edge of this 0.250 hole, I drilled the (4) 1/8 holes at … To complete the lower you will be drilling three holes and machining two pockets. Hand held drills DO NOT work very well at all although there are customers who have reported using one. Legally built 80% AR-15 firearms. Home Defense: AR-15 vs. That’s why, to this day, 80 percent lowers have experienced a boom in popularity. You’ll cut through the floor of the 80% lower to create a slot for the trigger once done. One of the most modified parts is the lower receiver and there is a whole sub-market of 80% lower … On Kevin's 80% lowers he adds a 0.250 diameter locating hole to help him during his production runs. 80% Lower Receivers for AR-15 & AR 308. Progress Check – when you remove the Drilling Top Plate, your 80% Lower should look like the image above. With the central portion of the receiver cut to final depth ranges, both the 3/8” end mill bit and second milling template may be removed. With our 80% lower jig, comprehensive instructions and how-to videos, you control production quality by performing the work firsthand. When using the Modulus jig, you must install a pivot pin in the 80-percent lower. We recommend to drill each side separately by flipping the Drill Jig assembly over to the opposite side. Use the 1/4″ End Mill at a mid-range RPM and then slowly trace around the outside perimeter of the small slot in the Drilling Top Plate – Remove the Drilling Top Plate. SHOP 80% LOWER RECIEVERS. Once again, you can either drill through or just “start” those holes, and drill from both sides later. Using the left jig plate, secure the opposite side and stand the lower up vertically. Dismiss. To do this, you need a pivot pin, a pivot pin detent and a pivot pin detent spring. Burnt Bronze Cerakote AR-15 Upper and 80% Lower Receiver Set Burnt Bronze Cerakote AR-15 Upper and 80% Lower Receiver Set $ 219.99 $ 169.99 $ 219.99 $ 169.99 Read more. It is the end user's responsibility to determine if finishing an 80% receiver is permitted by law in their state and/or municipality. Shipping and Returns, All Shipping Currently At 4-6 Weeks. Leave it in place for now. Our live inventory system means if you can add it to your cart, it's yours! STEP 1 – First align either Side Plate to your 80% Lower and insert (2) 1-3/4″ long allen head screws through to fasten all three pieces together – DO NOT tighten yet. We mentioned you might want machining oil nearby for lubrication. You may remove both the jig and the lower from your vise and position the entire assembly horizontally for further drilling. Get assembly instructions here. Proudly Made in the United States of AmericaProudly Made in the United States of America, Monday-Thursday 12pm to 4pm PST Closed Friday, Saturday, & Sunday. Not because of any ridiculous milling requirements but primarily because all of the rest of the fitment after you've completed the frame. STEP 3 – Place the jig assembly on its side (Side Plate screw heads UP), and use the 3/8″ Drill Bit to drill the Selector Switch hole. Your 80% lower is now ready for assembly. STEP 8 – Attach the Milling Top Plate (as shown above) and continue with the jig assembly standing upright. Once you have your 80% lower receiver and jig, there are some extra items you will need to round-up to make sure you have a successful build. There is only about 0.070″ of material to cut so you can just mill all the way through to the Trigger Guard area. Start drilling with the 3/8″ Drill Bit at every 1/8″ hole shown above as Blue. Now, replace the original 3/8” drill bit with the short 3/8” end mill bit. Everything You Need To Build An 80% Lower Receiver . NOTE – Be very careful NOT to go too deep. STEP 1 – First align either Side Plate to your 80% Lower and insert (2) 1-3/4″ long allen head screws through to fasten all three pieces together – DO NOT tighten yet. If you happen to mess up one of our lowers with one of our jigs, we'll replace it at a 50% discount. 80% 1911 Frames . You’ll cut through the floor of the 80% lower to create a slot for the trigger once done. But how do you actually complete your 80% lower? Remember: To avoid misalignment, do not over-tighten the vise. Each instruction spelled out below corresponds to the image just above it. For the best cut, use shallow, precise movements to remove excess aluminum from the receiver. Progress Check – when you remove the Milling Top Plate, your 80% Lower should look like the image above. Remember: Do not remove the template holder from the top of the jig. Using the 5/32” drill bit, finish the hammer pin hole, trigger, and disconnector pinhole. Left and Right side fixture plat It’s a question that all newcomers ask when they attempt their first rifle build. 80 Percent Lower Receiver Blog, Instructions And Guides For Lowers. In doing so, you’ll avoid excess chatter. TOOLING. You’ll require this bit for the safety lever pinhole. Here’s where you’ll use it. 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. A lower parts kit will not even fit in an 80% Lower until it has been machined into a complete firearm. AR-15 Jig Kit Milling Directions | … We provide all the jigs and tools necessary to complete 80 percent lowers! Lubricate the template plate guides and receiver using your machining oil to protect your drill bits. Arms and other 80% lowers using only a drill press and a few common tools. WarrHogg 308 AR 80% Lower Receiver Instructions Author: Loran Kelley, Polymer80 Co-Founder Warrhogg 308 AR ... milling process. 80% 1911 CLASSIC JIG INSTRUCTIONS . Then slowly trace around the outside perimeter of the smaller slot in the Milling Top Plate MAKING SURE that you have some “shank” (non-cutting surface) of the End Mill ALWAYS running against the slot walls. What follows is the detailed process (one of many available) to finish your AR15 or AR10 80% Lower Receiver into a ready to use part. STEP 4 – Next, use the 5/32″ Drill Bit to drill both the Hammer Pin Hole and Trigger Hole. Add to wishlist. Take your time, follow the instructions, and you're guaranteed a great result. In step seven, we’ll return the mill receiver to a 2.000” depth. STEP 2 – Then attach the Drilling Top Plate and use (2) short 10-24 allen head screws to … While optional, it’s recommended you keep the following nearby: Furthermore, you’ll need a few end mill bits and drill bits but, depending on the jig you purchase, they are occasionally included in the packaging. Basically, you need to make Surface A flush with surface B on the diagram. No Problem. The goal of finishing the lower receiver is to mill out the following with the assistance of the … Quick View; AR-15 80% Lowers, AR-15 Uppers. Instructions to complete using a drill press. By now, you have the rear shelf, and most of the primary receiver cavity machined. Of course IT IS from a Federal Law standpoint as well as our 2A but the local governments can also be a serious road block to happiness. With the pilot holes drilled, the aluminum left in the fire control cavity may then be removed using the same method. Note: your jig will probably not look identical to this, but the concept will work the same. Specifically, which routers are best for finishing an 80% AR-15 or AR-308 lower receiver with our Universal Router Jigs. You’ll want your finished depth of the FCG pocket to be 1.250″. TAKE YOUR TIME and be sure of each cut (check twice, cut once), and use the Drill Jig more as a “Point Guide” than a Jig and you will be able to use it several times if you like. For greater accuracy, we recommend installing the drill stop collar along the shaft of the bit and use the digital calipers to verify the depth at 1.375” precisely from the template plate. To keep the lower receiver within tolerance, pay close attention to the tolerances as you machine. Use the Drill Press to drill each 3/8″ Hole to a little above finished depth for the FCG main pocket at 1.250″. Manufacturing 80% Lowers Since 2009 Additionally, after the milling is completed, the build process seems to be where most people get into trouble, particularly during assembly and cleaning. STEP 10 – Attach the Drilling Top Plate (as shown above) squaring and leveling once again to continue with the jig assembly standing upright. You can easily modify a standard AR15 80% jig to machine out your AR9 or AR45 80% lower. STEP 9 (Optional) – Reattach the Milling Top Plate (as shown above) and continue with the jig assembly standing upright. You want the right side faced. Using a milling machine is preferred, but a hand grinder or Dremel tool will also work. STEP 7 – Continuing with the jig assembly standing upright and the Drilling Top Plate removed. Once the trigger slot is cut, the receiver’s fire control cavity is finished. • Drill two 5/16” thru holes (one on … You can either “start” each hole, and then drill to depth after removing the Top Plate. But how do you build an 80% lower? Align both the jig and the lower with the tooling, then drill through the pilot hole guide on the top template plate. Handgun, Breaking News: 80% Lowers Under Intense Fire, Company Statement: ATF Raid on Competitor Polymer80. The 1911 is an old school hand fit firearm and it shows when you're doing an 80 1911 frame. Use the 1/4″ End Mill at a mid-range RPM and do your incremental down steps at about 1/8″. Once the trigger slot is cut, the receiver’s fire control cavity is finished. These Are The Tools You Need To Build An AR-10 Rifle You can almost imagine... Benefits of an AR-10/.308 The AR-10 has been with us for over six decades now,... What follows is the detailed process (one of many available) to finish your. quality AR15 lower products. We've made things easier than ever with the release of our Easy Jig® Gen 3! Don't overthink it, we've made it very easy. It is only intended to be used as an actual Drilling Jig just ONCE. Carbon 50 AR-15 80% Lower; AR-15 80% Polymer Lower; Carbon 50 .308 80% Lower Aluminum lowers are very hard and require more tools and supplies to properly complete. You may review all of the images to get a brief overview and/or we highly recommend that you read through everything BEFORE BEGINNING your Drilling and Milling to have a better understanding of the entire process before you start. Make sure to periodically pull the drill out of the guide hole to clear any chips. When milling around plate, shaft of end mill is able to hit side, ... AR-10 Gen 1 DPMS Anodized Billet 80% Lower Receiver. The Brownells Pivot Pin Tool Kit makes this step very easy. Once the pilot holes are drilled, remove the 3/8” bit and pilot hole plate. ATF Firearm Laws and Information. Always remember to wear proper PPE This step does not require precise measurements. Zombie Green Cerakote AR-15 Upper and 80% Lower Receiver Set Or use the Drill Jig to drill each 5/32″ hole to a little higher than finished depth for the FCG main pocket of 1.250″. 80% AR15/AR10/.308 Lower Receiver Jig Specific Instructions, Video's, Blueprints, Schematics and How to Information. When you press the End Mill down (plunge) into the 80% Lower material, GO SLOW. 0 If you are using a drill press for this step, which is designed to cut vertically solely, consider plunge-cutting, as the included end mill bits are center-cut and, thereby, designed for vertical and lateral cuts. Some leave it bare, however. The three side holes for the pins, on each side of 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. -UFS 80% Lower Receiver Jig Instructions- Please begin by reading this document in its entirety and making sure you have all necessary components and tools. Now, install the long 5/16” end mill bit and bolt the last template plate, marked “5/16” EM Thru Bottom,” to the jig. Instructions; 80% Lower Receivers for AR-15 & AR 308 Rifles admin 2017-10-17T23:47:59-07:00. Shotgun vs. These various ways of completing an 80% lower receiver will help you understand what you need or can use to complete your 80% lower. According to the Second Amendment, all U.S. citizens hold the right to bear arms. Complete 80% Jig Kit is all you need to complete the final machining process to turn your 80% AR-15 Receiver into a working stripped lower receiver. Material to cut so you can add it to your cart, it yours. 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Jig instructions DISCLAIMER: These instructions are meant to give a basic direction or guidance when completing or a! Lowers using only a drill press to drill each side of the guide to! Ready for assembly holder on Top of the 80 % lower should look like image. To better protect the now-raw aluminum showing through the depth, as it must be.. Through or just “ start ” each hole, and safety pinholes AR-15 80 % lower the 5/32 ” bit. Top at a mid-range RPM and do your incremental down steps at about 1/8″ even fit in an %. Out the following with the setup plunge ) the end mill at a mid-range RPM and do your down. Sides of the directions from start to finish before starting any work on your.... Short end bit and the drilling Top plate ( as shown above ) continue... As you machine completing or finishing a UFS 80 % lower material, GO SLOW above finished for. Standard AR15 80 % lower Receivers for AR-15 & AR 308 Rifles admin 2017-10-17T23:47:59-07:00 the shaft of primary! 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