rob072770 Posted April 27, 2012 Report Share Posted April 27, 2012 starting to see some buffer wear on the botton. I know this is acommon deal with a piston upper. I have a NiB carrier group. It. there a matching hardness buffer tube. None of the guns have this. Can you fix bolt rise? Or I need to get over it as part of the piston system. I do like the piston system easy to clean. It also works so well in SBRs Quote Link to comment Share on other sites More sharing options...
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