JP Enterprises Aluminum Ultra Low Mass Carrier For Small Frame .223 w/Jpfr-223T Titanium Firing Pin/Jpgr-223 Gas Ring/JP-Enhanced Bolt Green JPBC-1A. By reducing the reciprocating mass within the operating system the bolt velocity is increased while...
JP Enterprises Aluminum Ultra Low Mass Carrier For Small Frame .223 w/Jpfr-223T Titanium Firing Pin/Jpgr-223 Gas Ring/JP-Enhanced Bolt Green JPBC-1A. By reducing the reciprocating mass within the operating system the bolt velocity is increased while...