For AR-15 PCC guns with barrel lengths of 8” up to the typical 16" carbine, we recommend our heavy damped buffer/spring combination with our heavy damped 9mm hydraulic buffer (Part# RB5015HD) and the SPRINCO Extra Power AR-10 carbine buffer spring (color code ORANGE - Part# SPRINCO-25762).  This set up is an exceptional package and runs great with everything from light match loads to full power defense loads.  Will make a significant reduction in recoil impulse and shot recovery time for super fast and smooth shooting.  Used by military and world-class competition shooters world-wide.  This is simply the best performing AR PCC buffer system available.  You will love it!  

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