Shop › SCO ASR RCB COMPENSATOR 1/2X28 .223 SCO ASR RCB COMPENSATOR 1/2X28 .223 $118.15 sold out SilencerCo ASR RCB Compensator, 223 Remington/556NATO, Nitride Finish, Black AC5527 Sold Out Added! SilencerCo ASR RCB Compensator, 223 Remington/556NATO, Nitride Finish, Black AC5527