Perfect for your build or direct replacement for worn out parts. Mil-Spec carbine buffer for use in AR15 carbines with a collapsible buttstock. The carbine buffer weighs 3 oz. The H Buffer is a heavy buffer designed to reduce felt recoil as well as reduce the cycling rate on full-auto rifles. It is designed to mil-spec standards for use in AR15 carbines with a collapsible buttstock. The H2 Buffer is a heavy buffer designed to reduce felt recoil as well as reduce the cycling rate on full-auto rifles. It is designed to mil-spec standards for use in AR15 carbines with a collapsible buttstock. Weight: 4.65. The H3 Buffer is a heavy buffer designed to reduce felt recoil Mfg: Aero Precision