Silencerco Bravo ASR Mount Black. Once shouldered the locking ring ensures the suppressor will not rotate or work itself loose under a heavy firing schedule. Specifications for SilencerCo Harvester Big Bore ASR Mount For Harvester Big Bore Muzzle Brakes AC824: Mfg Item Num: AC824 Type: Silencer Mounts/Accessories made in specialized factories: made in specialized factories Master Model Header: Harvester Big Bore ASR Mount The SilencerCo Harvester Big Bore ASR Mount For Harvester Big Bore Muzzle Brakes AC824 is a quality addition to the SilencerCo lineup. For more great deals on Gun Parts by SilencerCo please browse our SilencerCo Gun Parts page. The ASR Mount is compatible with all ASR muzzle devices allowing you to use one convenient mounting system for various suppressors. Once shouldered the locking ring ensures the suppressor will not rotate or work itself loose under a heavy firing schedule.