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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
ar upper help!
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<blockquote data-quote="beakus33" data-source="post: 625031" data-attributes="member: 41623"><p>I have a Surplus Ammo&Arms lower that need tweeking,i'v had 3 uppers on it and only one fit really nice,the bushmaster. the YHM and DMPS both fit good on the pivot pin but the rear is REALLY tight.any ideas? my thought was the holes are supposed to be for a .156 pin plus a few thousands for clearance so i'm wondering about a reamer to remove just the hard coat in the rear hole,.001-.002 i have precision pins and a good selection of reamers so i can get to within .0005-.001 of what it is now with the coating in the hole then just remove the .001-.002 of coating.</p></blockquote><p></p>
[QUOTE="beakus33, post: 625031, member: 41623"] I have a Surplus Ammo&Arms lower that need tweeking,i'v had 3 uppers on it and only one fit really nice,the bushmaster. the YHM and DMPS both fit good on the pivot pin but the rear is REALLY tight.any ideas? my thought was the holes are supposed to be for a .156 pin plus a few thousands for clearance so i'm wondering about a reamer to remove just the hard coat in the rear hole,.001-.002 i have precision pins and a good selection of reamers so i can get to within .0005-.001 of what it is now with the coating in the hole then just remove the .001-.002 of coating. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
ar upper help!
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