For the ultimate buffer system performance in AR-15 PCC guns with barrel lengths of 8” or more, we recommend our Competition Package with our heavy damped 9mm hydraulic buffer (Part# RB5015HD), our 2.5 oz PCC Buffer Weight (Part# R15015098), and the SPRINCO Extra Power AR-10 carbine buffer spring (color code ORANGE - Part# SPRINCO-25762). In this package, the PCC Buffer Weight is placed in the buffer tube forward of the buffer, right behind the bolt. This package can be run in an AR-10/A5 length buffer tube as a full-stroke system which stops behind the bolt catch, or it can be run in a standard AR-15 carbine buffer tube for a system that is short stroked by ¾” and stops forward of the bolt catch. Please be aware that short stroking a PCC operating system may not properly reset some triggers and the bolt catch will no longer work with most bolts.  However, most PCC triggers do reset reliably with this set up.  Some competition shooters feel that the shot recovery is slightly faster with a short-stroke system, and it does seem to work well for some if they are using very soft loads.  However, the recoil impulse is greater since the bolt has less time to slow down prior to impacting the buffer.  It is our recommendation for most shooters to set up their guns in a full-stroke configuration for lower recoil, more reliable trigger operation and to retain the use of your bolt catch.  To use this combination in a full-stroke configuration, be sure to get an A5 or AR-10 carbine buffer tube which is 3/4" longer on the inside.  In full-stroke configuration, this combination is also the preferred set up for .40 and .45 PCC guns and suppressed guns.  

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