I'd be VERY hesitant to do it though, because you're creating more "custom" fits, and basically band-aiding a machining issue. You should easily see where the interference is because the file will leave marks where it's hitting. Once again, put the front pin in and close the upper and lower, then take the rat-tail (round) file and just LIGHTLY pass it back and forth through the hole a couple times. The only two options are to either buy a stripped lower and swap all your stuff over, or to use a rat-tail file and GENTLY remove just enough material from the rear hole (upper) to open up the clearances just a bit. The hex screw will go into the front hole until it is tight, just dont over tighten. Mainly determine if it's a front/back or up/down issue. 248 diameter, allowing you to improve your upper to lower receiver fit, and features early Armalite / early Colt style dimples to assist in. I'd put the front pin in, close 'er up, then take a flashlight or bore scope and see if you can see the misalignment. The NEW AR-15 Complete Owner's Guide: Griffin Armament Oversized Takedown Pins Build List Below: Primary Arms, LLC /Trijicon TA31 ACSS ACOG (green) Bobro Engineering QD TA31 Mount Trijicon, Inc. I don't mean a thousndth or two, but visibly "ovaling" the hole. Armaspec AR15 Stainless Steel Takedown/Pivot Pins Set. Please view details for more information. You Save: 1.50 (10 ) Quantity: We currently have 6 available. When I attempt to pull the pin it will not come out. Your AR-15 takedown pin is essentially the lynchpin of your entire rifle. Armaspec AR15 Enhanced Takedown/Pivot Pins -Steel Black. Features: Takedown/pivot Spring Takedown/pivot detent Hardened trigger/hammer pins Takedown. I imagine the pins in most kits are intentionally made on the small side so that they will fit any rifle out there, no matter what. The holes in my lower and upper are between. In most instances, we cannot find a single. BCM Gunfighter Enhanced Lower Parts Kit Black (AR-15) MSRP: 130. I measured the diameters of these pins (the right way, with a micrometer) and they both measure. I removed the cross kit and installed the new pin/detent/spring. Comes with everything shown in the above pic (GF MOD3 Grip, BCM PNT FCG and BCMs QD plate). ![]() I purchased a LWRC extended takedown pin as well as a generic detent and spring. I've seen some of their parts where they've literally "hogged out" holes to make them fit. Hi - My AR was purchased with the cross armory quick pin kit installed. Just for curiosity, who made the lower? I know there's one manufacturer out there that's famous for making out-of-spec shit that only fits their "matching" parts. Definitely sounds like the lower is out of spec.a little.
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