12ptdroptine Posted January 28, 2012 Report Share Posted January 28, 2012 I have noticet that the fit on my LR308 isnt tight at the rear of the upperwhere it pins to the lower. You can actually move it up and down to the point where you can hear a little clunk..and some side motion. Never knew to look for this. Front pin is tight but the back one sure isnt. it hasnt had 100 rounds through it. is this common?Thanks Drop Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted January 28, 2012 Report Share Posted January 28, 2012 Yup. Common enough that someone invented this...Accu Wedge Quote Link to comment Share on other sites More sharing options...
Jgun Posted January 28, 2012 Report Share Posted January 28, 2012 On my small frame AR builds, I routinely fit oversize national match pins available from Armalite. Another option is the expanding takedown pins available from Demon tactical, and others. Unfortunately, I have yet to see them offered for the large frame AR's. If any members are aware of someone selling OS pins for the .308 AR, Please let me know. Quote Link to comment Share on other sites More sharing options...
JMoto Posted January 29, 2012 Report Share Posted January 29, 2012 Another option is to bed the receiver either the upper or lower. I have done it on a couple but there are other options. The main thing I like about the bedding is that it is still a tooless takedown should I need to strip it in a hurry. Quote Link to comment Share on other sites More sharing options...
1010 Posted January 31, 2012 Report Share Posted January 31, 2012 mine had a little play, i just installed a .006 shim between the upper and lower at the area behind the rear pin..now it locks up tight. Quote Link to comment Share on other sites More sharing options...
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