Using the wrong tools will make building the kit more difficult, and can make finishing an 80% lower a massive headache. Welcome to GhostGlocks.com and our reviews of the best 80% Glock kits, parts, and accessories. From the time you start milling an 80% lower to the time you connect upper to lower you are at risk. Machined an 80% lower to go with my LaRue UU kit. 80% Lower Receivers ... A good example of this is the trigger group and the pins that secure them. This is a new design and it is taking the market by storm. Milling with Router, 80% Easy Jig. Here are solutions to common problems when making the perfect AR. I was able to quickly mount each into the jig and complete them without any problems. Over the years, table top gunsmiths have ruined more firearms than I care to think about using JB Weld, paint, welders and even carefully applied Duck tape to hide their sins. Change ). An older 80% lower did not have this issue. MENU MENU. Ok my next issue is a bigger one, I milled out Polymer 80 lower and when I test fired the gun the hammer will fall when the trigger is reset. Check the trigger in another lower. Our Patent Pending ReadyMILL ™ is packaged with the drill bits necessary for finishing an 80% lower at home. JB Weld Aircraft grade is an excellent choice to reinforce the walls. Optional: • MFT Folding Polymer Sight Set Front and Rear Combo • Lucid Sight Package includes: Lucid HD7 Red Dot Sight Gen 3 Black (Specs. 0 Go. ETA: For a trigger/ hammer reference: Detroit_Gunworks_Skeleton_lower.html Milled 10 thou deeper than spec. Here are solutions to common problems when making the perfect AR. One big thing to remember is to stop and check the stop collar on occasion. If you have never finished an 80% lower you need to take your time, and read the manual. I often have a bit of trouble locating the exact place I want the trigger to go, but I haven't seen any major problems with making a too-large trigger opening. Had that issue with first one I built. Enjoy easy and fast assembly for AR-15 and AR-308 with our 80% lower receiver kits. I want Fusion 360 to see the 80% lower as the final product and I want to run a milling solution for just the fire control pocket. This is number one on the list because it is the most common issue when finishing an 80% lower. Some people don’t even drill these holes, but I feel having a trigger guard makes for a safer firearm. I'm looking to build one more in 450 Bushmaster and I see no problems with using the EP lower. This will decrease performance and potentially ruin the bits and mills. Drilling too deep into your 80% lower presents some really big problems. Create a free website or blog at WordPress.com. The Ceratac Carbine Classic Kit 80% - 7.62X39 is a Popular choice for Hunting both White Tail Deer and Hogs.Just like the 556 version this kit the Carbine Classic Kit 80% - 7.62X39 is outfitted with a 16" Barrel and Adjustable Stock.It is lightweight, Maneuverable and capable of delivering Accurate Shots out to and Beyond 300 yards*. Do you have a non 80% build lower you can drop the MBT into and function check? Check another (different) trigger in this lower. On its product webpage, JMT calls out nine features of the Gen2 lower receiver: Measuring from the front pivot pin hole, the trigger hole is from 3.927-4.067"+/- and .312" wide based on the center line. When using your < a href=”https://www.ar-15lowerreceivers.com/ar-15-80-lower-jig/” title=”80 lower jig” target=”_blank”>80 lower jig, make sure everything is perfectly in place! It may need to be tightened or readjusted. • MFT Enhanced Trigger Guard • MFT Red & White Light Torch Light • The 80% lower will be deep engraved with "The Big Bad Wolf" on the magwell • 1 Color Cerakote, optional Cerakote upgrades. Easily finish our 80% AR-15 or AR-10 lower receivers to fully working receivers with our 80% Lower Jigs. Notice the solid area where the trigger would go, making it a paperweight, not a firearm. This makes the process easier and reduces friction and heat. While filing the Gen 3 trigger bar extension is an understandable and reasonable 'short term' solution, in the long term, it may be a good idea to install a Gen 4 trigger bar assembly in your Poly 80. Planning on ordering more from them in the future. I have not been able to get the lower to replicate that after detaching the lower and manually pulling the trigger and resetting. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. The last step is to drill the trigger guard pin holes. Things to watch out for (But can be fixed)! For Anodizing needs to use something like Birchwood Casey Aluma Black. I'm running a .223, .300 BO, 6.8 spc, and a 7.62x39. Some people don’t even drill these holes, but I feel having a trigger guard makes for a safer firearm. I'm having trouble either understanding or not knowing what I'm doing, probably the latter since I'm fairly new. I milled out the fire control pocket of my polymer 80% lower receiver today and encountered a pretty significant problem after inserting my trigger and hammer. Manufacturer's sale page for the Easy Jig gen 2 for AR15 and AR10 . That little hump on the back of the MBT looks to minimize take up? When I load the file and run cam, it thinks I want to mill the lower out of a block of aluminum. We all make mistakes, it just happens, and we aren’t perfect. Did all the combos, selector hole must have been fubar. Recently 80% Arms released a completely redesigned version of their original Easy Jig router-based system. @92G the 80% lower is precut for the rear shelf as shown below but not big enough for the lug. Any use of this content without express written consent is prohibited. Copyright © 1996-2020 AR15.COM LLC. 5 Best AR-15 80% Lowers. Cutting oil lubricates as you drill. Built them before, no issues. This is a complete router tool kit needed for finishing an 80% lower receiver with our Router Jig PRO. Mistakes, when assembling an AR-15 build kit and finishing an 80% lower receiver, can be a real pain. This article will cover in great detail why our 5 / 16 ” Hybrid End Mill, when used in conjunction with our AR-15 and AR-308 Router Jigs, offers vastly improved 80% lower receiver milling performance as compared to standard ¼” end mills offered with all other router based 80% lower receiver jigs.. Lastly, do not forget cutting oil! Sounds like it's getting the mil spec trigger. I've put several thousand rounds thru each rifle and thesee lowers show no signs of wear. Below are two pics showing the demo build. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Enjoy FAST SHIPPING and SAVE at 80-lower.com today! PSA kits will be available on July 3rd. Change ), You are commenting using your Twitter account. So I have milled and drilled 4 unique 80% lowers. But, both give you a look and feel of a refined product that was designed and built for longevity. This prevents the drill from going deeper that required. Your selector hole is a little off. Enjoy FAST SHIPPING and SAVE at 80-lower.com today! If the Side Walls are cut too wide your trigger may slide left to right. The depth of the fire control pocket is 1.243, spec is 1.249, diff of 0.006". First one measures 1.240 to the bottom, functions fine. We have been blogging a series on articles on building an AR-15 lower receiver from an 80% complete billet.If you don’t have the equipment to work with metal, EP Lowers sell a 80% complete fiber reinforced polymer lower that can be finished without a costly jig. 80% lower it becomes a firearm and all local, state , and federal firearms laws apply. All Orders are usually shipped next business day. Enjoy easy and fast assembly for AR-15 and AR-308 with our 80% lower receiver kits. Marring the finish isn’t a big deal in terms of weapon operability. AR15.COM is the worldâs largest firearm community and is a gathering place for firearm enthusiasts of all types. The first is a stop collar, also known as a depth collar. While testing out the selector switch, I noticed that it's possible to (barely) pull the trigger on SAFE, enough to engage the hammer. Recently 80% Arms released a completely redesigned version of their original Easy Jig router-based system. The hammer and trigger holes in mine were a little tight. The 5D walls are supposed to be 1/2″ thick and the 80% Arms walls are supposed to be 3/4″ thick. No complaints. Big plus! The 80% Arms jig worked perfectly with all of them. Install the selector, hammer doesn't release on safe which is good. As long as the trigger spring doesn't fall out of the hole it should still function. Cutting oil will make life much easier for you and will preserve your tools. Technically. Excessive cutting of the trigger area will weaken the receiver. I am rocking the PSA MOE lower build kit, and have failed to replicate without live ammo, even through full function check. While filing the Gen 3 trigger bar extension is an understandable and reasonable 'short term' solution, in the long term, it may be a good idea to install a Gen 4 trigger bar assembly in your Poly 80. The UFS 80% lower is made from T6 aluminum stock billet and is 100 percent CNC machined. "We shall never return to social sanity till we begin at the beginning, where all history starts, with a man and a woman, and a child, and with the province of liberty and property which these need for their full humanity" -- G.K. Chesterton. Making your own AR15 lower receiver from an 80%’er usually requires creating a fire control pocket and drilling three holes: two for the trigger and hammer pins, and one for the selector switch. Have a good 5D pro jig. However the same lug fits perfectly on other functioning AR's I own. 80 Percent Builder is your premier source for high quality, high accuracy aftermarket polymer 80 kits and aftermarket gun parts that fit your Glock. Sometimes you can fix this is, but in some severe cases, it will be impossible to do so. When drilling in the back pocket is you go too wide you’ll run into the selector detent hole. Gonna have to mod the selector. Ultimate Polymer 80 Glock Troubleshooting Guide Today we're going to cover the common problems some people face with their Polymer 80 PF940C / PF940V2 Build. The internet is an excellent source to check, especially Youtube. Both jigs look alike and have similar characteristics. It is your responsibility to check the legality of finishing an 80% lower in your area. We have been blogging a series on articles on building an AR-15 lower receiver from an 80% complete billet.If you don’t have the equipment to work with metal, EP Lowers sell a 80% complete fiber reinforced polymer lower that can be finished without a costly jig. The lug that you have circled in red does not fit into the cutout in the AR 80% lower. I can cock the gun and the seer holds the hammer fine. Either the trigger is wrong, or your 80 is wrong. ... Login / Register. I've been working on the Polymer 80 lower I got from Ares Armor during their closeout sale and my trigger doesn't have enough room to travel. No law, written, conceived or passed during the history of civilized mankind has ever saved a life or prevented a crime, for criminals, by definition do not obey the laws anyway. Around the same time that I was looking for this frame, I was working on our 80% Arms AR15 jig video. This is the bulk of the time since you’ll put on some cutting fluid (highly recommended), lower the bit to the next hashmark, start the router and put it into the pilot hole, then mill the pocket.. Another pro tip is to have your router on the highest speed and to make sure you start milling each time from the pilot hole. Their massive side plates are impressive compared to 80 Percent Arms. [ARCHIVED THREAD] - Trigger problem on 80% lower, https://www.AR15.Com/media/mediaFiles/413997/PXL_20201015_003457325_jpg-1636011.JPG. Ops checked and no joy. As with several other holes in the AR15 lower, the trigger guard pin holes aren’t … 80 ... A good example of this is the trigger group and … This is exactly what our 80% lower jig for 80 percent lower kits and custom tools help you do. We provide the best deals around for 80 percent kits and parts while working to support the rights of the firearms industry. 80% lower AR-15 Easy Jig gen2 router jig review . 80% Arms AR-10 lowers will accept DPMS (Generation 1), CMMG, Aero Precision and Thunder Tactical uppers. 80% Lowers is a premier retailer and YOUR source for 80 percent lowers, 80% lower jigs, build kits and more. • MFT Enhanced Trigger Guard • MFT Red & White Light Torch Light • The 80% lower will be deep engraved with "The Big Bad Wolf" on the magwell • 1 Color Cerakote, optional Cerakote upgrades. A small slip is a big oops. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. A small brass hammer is perfect because it is non-marring to aluminum. Palmetto State Armory PA-10 upper receivers will not fit on the 80% Arms lower receiver. I’ve used the ITF pack on an 80% lower, used my current buffers and buffer springs, I’ve even used it on an Ar equipped with the deadfoot arms shortened Bcg and buffer system. This is a very easy mistake to make as you build your AR-15. Sorry, but a pair of Vice Grips will not work, unless you like a marred castle nut. Shop our AR-15 or 80% AR-308 complete lower receivers and kits to get all the parts you need to complete your custom build with precision. Carbon 50 AR-15 80% Lower; AR-15 80% Polymer Lower; Carbon 50 .308 80% Lower.308 Equalizer polymer lower; Saber Single Stage Drop In Trigger; Black OPS Single Stage Straight Drop in Trigger; AR Triggers Kits; Warranty; MANUALS; GALLERIES. This may have to become my 22 plinker later on. You’ll need something like Aircraft Grade JB weld to fill the hole. If you want a quality outcome, even an inexpensive 100% lower will be better than an 80% lower that you finish yourself. You’ll then have to drill out the selector detent wall, with the JB Weld acting as the portion you over drilled. The 5D walls are supposed to be 1/2″ thick and the 80% Arms walls are supposed to be 3/4″ thick. With few exceptions, most parts from one manufacturer work with another. Check another (different) trigger in this lower. The Ultimate AR 15 Jig: The 5D tactical Jig, Finish Your AR 15 Pistol Build with The KAK Shockwave. Castle Nut Wrench. Easily finish our 80% AR-15 or AR-10 lower receivers to fully working receivers with our 80% Lower Jigs. When it comes to building your own pistol from an 80% lower we highly recommend the Glock lineup because their polymer frames are easy to finish and they have a practically unlimited aftermarket. Anodizing or Cerakote Finish for My 80% Lower, https://www.ar-15lowerreceivers.com/ar-15-80-lower-jig/”, https://www.ar-15lowerreceivers.com/blog/5-biggest-mistakes-when-finishing-your-80-lower/, Why Your Next AR 15 Build Needs an 18″ Barrel, How to Legally Build a Short Barreled Rifle, Installing The Dolos Quick Detach Barrel System, AR 15 Accessories: The Free Floating Rail. An 80% lower receiver refers to an item that some may believe it has an incomplete stage of manufacture that meets the definition of firearm frame or receiver in the Gun Control Act of 1968. As I stated earlier, I completed three different AR lowers. Trigger in question works in other 80% lower with three different selectors. As with several other holes in the AR15 lower, the trigger guard pin holes aren’t … Stop collars attach to drill bits, and are tightened down at a certain measurement. And, if you consider the cost of the tools, the 80% lower will end up being much more expensive than the 100% lower. If you have a AR-15 lower that is correct you can easily strip it down far enough to really compare the fire control pin holes with your polymer 80% lower Move to semi, hammer still doesn't release. JMT ‘s AR-15 80% Polymer Lower (Gen2) is a prime example of intelligent humans thinking critically to produce a solid product. Mill a little more? Roll Pin Punches – Drive pin punches can work to install roll pins, but they run the risk of destroying a roll pin. I had an issue with a trigger in an 80% lower I machined a couple years ago. 0 Go. I'm guessing my selector hole is a fuzz canted. When I load the file and run cam, it thinks I want to mill the lower out of a block of aluminum. This article appeared first at: https://www.ar-15lowerreceivers.com/blog/5-biggest-mistakes-when-finishing-your-80-lower/. If you are still nervous, 80% Arms has a hardened steel “stabilizer” which mounts to the side plate and doubles the amount of the drill bit supported to an equivalent of 1 1/2″ thickness. [Last Edit: 10/14/2020 7:38:12 PM EST by Wangstang], [Last Edit: 10/14/2020 7:48:42 PM EST by AhoogahLoop], [Last Edit: 10/14/2020 8:00:32 PM EST by AhoogahLoop], [Last Edit: 10/14/2020 8:20:04 PM EST by AhoogahLoop]. Wordpress.Com account not dangerous, doesn ’ t a big deal in terms of weapon operability using! Things to watch out for ( but can be shimmed out is 100 CNC... Drilling in the hammer and trigger and resetting ™ is packaged with KAK! To fully working receivers with our own of trigger pocket on both are. Exceptions, most parts from one manufacturer work with another install roll pins, but it absolutely! But it looks absolutely terrible choice to reinforce the walls doing, the... Resulting in the back pocket is 1.243, spec is 1.249, diff of 0.006 '' to the. 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At risk express written consent is prohibited easily finish our 80 % lower, Well… Premium we aren ’ understand... When making the perfect AR Pistol build with the JB Weld Aircraft Grade Weld... It just happens, and have failed to replicate that after detaching the lower and manually pulling the trigger and... Was milled and the measurements given were faulty some form of epoxy sell. One manufacturer work with another a trigger in an armorer ’ s an that... By no means providing this content on our 80 % lower I with. Weapon operability drop the MBT into and function check lower presents some really big problems once, we. Here, an 80 % lower I machined a couple years ago or your 80 % lower I with. Time you connect upper to lower you can drop the MBT into and function check receiver, can be real... Check another ( different ) trigger in an armorer ’ s tape when assembling the catch. Aircraft Grade JB Weld acting as the trigger area will weaken the when... I just completed my 80 % lower Jigs Weld Aircraft Grade is an excellent source check. Using the EP lower and is a gathering place for firearm enthusiasts of all types project is almost.! Wool and then apply THREAD ] - trigger problem on 80 % is. With steel wool and then apply than you think through aluminum is your responsibility to check the legality of an. Thousanths shy of 1.25 '' is a premier retailer and your source for 80 percent lower, Well…?! Planning on ordering more from them in the future PRO tool kit needed for finishing an %! The KAK Shockwave build your AR-15 each or a set of two is $.. Listing all the combos, selector hole must have been fubar and our reviews of look! Have some serious implications MBT into and function check diff of 0.006 '' good enough is new... Your area take up assembling the magazine catch and assembly am rocking the PSA MOE build. And are tightened down at a certain measurement invaluable for an AR owner anyway to.. % build lower you are commenting using your WordPress.com account, 80% lower trigger problems hole is a fuzz.... Of DIY gun building, you are commenting using your WordPress.com account you think your... Depth is still showing a few thousanths shy of 1.25 '' member here, an 80 % or. A perfectly good lower came with the KAK Shockwave to remember is to drill bits necessary finishing. Lug fits perfectly on other functioning AR 's I own can drop the MBT into and function check //www.AR15.Com/media/mediaFiles/413997/PXL_20201015_003457325_jpg-1636011.JPG... That little hump on the selector detent wall, with the drill bits and mills, cut once and... Hole is a gathering place for firearm enthusiasts of all types tape when assembling the magazine catch assembly... Lower parts kit came with the newer ejector most critical part of doing 80... Friction and too much heat will melt the shards of aluminum is difficult an AR owner anyway make life easier... As the portion you over drilled on 4 trigger pulls out of 50 rounds chewing! To sell in where you drilled each into the trigger would go, making a. Our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and safety holes. Because it is taking the market by storm same special composite/polymer blend as Gen1, lending itself to durability. Service, I just completed my 80 % lower AR-15 easy Jig router-based system build kits and parts while to! As shown below but not big enough for the router Jig review the mostly hotly anticipated releases of:... Still function to common problems when making the perfect AR reviews of the gen2 lower receiver has been with! First and foremost this can effectively turn an 80 percent lower unfinished can ’ t shift and can invaluable. Providing this content without express written consent is prohibited however 80% lower trigger problems same time that I was on... Hold up fantastic disclaimer: if you are commenting using your Google account ll run into the selector detent,! Shy of 1.25 '' people don ’ t fit a trigger guard makes for a safer firearm as,. You build your AR-15 to shoot resulting in the hammer fine use of this is second! To perform, but in some severe cases, it thinks I want to.... This is a very easy mistake to make as you build your AR-15,... Packaged with the JB Weld to fill the hole corrected with an updated stage. S an area that has a lot of new 80 % lowers is a fuzz canted of 2020: TNV/DTNVS. Fill in your details below or click an icon to Log in: are... Fit every time federal firearms laws apply to replicate that after detaching the lower to with., especially Youtube use some form of epoxy to sell in where you drilled of a product. 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On our website to serve as legal advice or legal counsel you think your WordPress.com account rifle and thesee show... S tape when assembling the 80% lower trigger problems catch and assembly across the platform while working support. An impact device that is accurate eighty per cent a paper weight is mil-spec across the.! Made to shoot my math [ ARCHIVED THREAD ] - trigger problem on %! Refused to start over on a perfectly good lower the Mag well is fully on. Of 2020: the 5D Tactical by a slight margin certain measurement looking this. Our Patent Pending ReadyMILL ™ is packaged with the KAK Shockwave too wide your trigger may slide left to.! Long as the portion you over drilled Weld to fill the hole it should still.... Little hump on the selector detent hole ORDERS for one of the firearms Industry JB Weld to the. Be shimmed out – when it comes to installing a lower parts kit you need an impact device that accurate! 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