For AR-15s chambered in .223/5.56 with a collapsible stock and a 14.5-20” barrel, we recommend the KynSHOT AR15 carbine hydraulic buffer (Part# RB5000) and the JP .223 carbine buffer spring (part# JPS-OSC) or the Sprinco .223 Enhanced Power buffer spring (part# SPRINCO-25007). This is will provide the softest recoil impulse, smoothest operation and fastest shot recovery time.
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