Description
The SilencerCo ASR Muzzle Brake is built specifically for shooters who run a SilencerCo Harvester Big Bore suppressor and want a fast, repeatable way to mount it. The ASR (Active Spring Retention) mount system is the mechanical core of this brake: rather than relying on a simple thread or a friction-fit collar, ASR uses a spring-loaded locking mechanism that engages automatically as the suppressor is rotated into place. That means the can seats the same way every time, which matters for point-of-impact consistency when you’re switching between shooting suppressed and unsuppressed.
The 3/4″-24 thread pitch is sized for larger-bore barrel profiles typical of .338-caliber rifles, and the brake itself does real muzzle-control work on its own. The three-port design redirects propellant gases to reduce felt recoil and muzzle rise, so it’s pulling double duty as both a functional brake and a mounting platform. That’s a practical arrangement for a hard-recoiling cartridge where you may not always want to shoot suppressed but still want the recoil mitigation. The brake ships in a black steel finish that holds up under the heat cycles a .338-caliber rifle generates. If you’re already in the SilencerCo ASR ecosystem, this is the correct mounting interface for the Harvester Big Bore on a 3/4″-24 threaded muzzle.




