Requires an ASR-mounted SilencerCo suppressor for quick-detach suppressor function.
The SilencerCo AC591 ASR Muzzle Brake is a 5/8x24 threaded .30 caliber / 7.62mm 3-port muzzle brake for compatible rifle hosts. It works as a stand-alone muzzle brake for recoil and muzzle-rise reduction and also serves as a suppressor mounting interface for compatible SilencerCo ASR suppressor setups.
SilencerCo designed the ASR Muzzle Brake to redirect propellant gases to help reduce felt recoil and muzzle climb. When paired with the proper ASR-equipped suppressor, this muzzle device supports a quick attach/detach suppressor interface for compatible SilencerCo systems.
5/8x24 Thread Pattern for .30 Caliber Hosts: This AC591 model uses 5/8x24 threads and is intended for compatible .30 caliber / 7.62mm applications. The 5/8x24 thread pitch is commonly used on many .308 Winchester, 7.62 NATO, 300 Blackout, 6.5 Creedmoor, and similar threaded rifle barrels. Always confirm actual barrel thread pitch, caliber, and bore clearance before installation.
ASR Suppressor Mount Compatibility: The AC591 is part of SilencerCo’s ASR mounting family and is intended for use with compatible SilencerCo suppressors and ASR mounts. Always confirm the suppressor model, ASR mount type, caliber rating, and barrel thread pitch before installation or suppressor use.
Shim Set Included: SilencerCo states that each ASR muzzle brake comes with a shim set for installation. Proper timing and alignment are important for muzzle brake performance and suppressor use.
Installation Note: Proper installation is important for suppressor alignment. Use the correct shims, torque guidance, and installation method recommended by SilencerCo. Do not use a crush washer with suppressor-compatible muzzle devices.
Important Fitment Note: Always confirm barrel thread pitch, caliber, bore clearance, suppressor compatibility, ASR mount compatibility, shoulder geometry, torque requirements, and alignment before installation or live fire.
Related Gear: Browse more SilencerCo products, shop additional silencer muzzle devices, or pair your rifle with compatible centerfire rifle ammunition.