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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 ...

For .300 Blackout AR15 carbines, they tend to run softer than 5.56/.223 AR15s, especially if you use subsonic ammunition.  So in order to cycle reliably and...

For typical AR15 rifles with 16" or longer barrels and a fixed-stock with a full-length, fixed-stock buffer tube, we recommend the RB5001 rifle buffer ...

For an AR-15 chambered in .450 Bushmaster with a collapsible stock, we recommend the KynSHOT AR15 carbine hydraulic buffer (part# RB5000) and the SPRINCO Ex...

For an AR-15 chambered in .458 SOCOM or .50 Beowulf with a collapsible stock, we recommend the KynSHOT AR15 carbine hydraulic buffer “High Pressure” (part# ...

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 damp...

For AR-15 PCC guns with barrel lengths of less than 8”, we recommend our standard damped buffer/spring combination with our standard damped 9mm hydraulic bu...

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 9...

For CMMG Guard 9mm guns with the Radial Delayed Blowback operating system and a collapsible stock, you need a buffer that is the same length as a standard A...

For an AR-10 chambered in .308/7.62 with a collapsible stock, if it has an AR-15 carbine buffer tube (which is 7” long on the inside) then it needs a 2.5” b...