SilencerCo AC1733 ASR Muzzle Brake 5/8x24 .458 Cal Black Steel

The SilencerCo AC1733 ASR Muzzle Brake is a 3-port muzzle device designed around .458 caliber rifles and magnum-class hosts running 5/8x24 threads. Machined from steel and finished in a durable black coating, it locks directly into SilencerCo's Active Spring Retention (ASR) quick-detach mount system, allowing the brake to stay installed on the host while an ASR-compatible suppressor clocks on and off in seconds.

The 3-port geometry redirects a portion of the propellant gases to actively counter felt recoil and tame muzzle climb during rapid strings of fire, helping the shooter stay on target without walking the sights between shots. Patent-pending resonance suppression is engineered to eliminate the "tuning-fork" vibration common to heavy magnum brakes, delivering a noticeably smoother shooting experience than typical prong or baffle-only designs.

At 5/8x24, the AC1733 threads up cleanly to the larger bores found on big-bore magnum setups, and it pairs seamlessly with SilencerCo suppressors equipped with the ASR mount. The compact .46 diameter keeps the package light and snag-free in the field.