Confirmed via SilencerCo's own product page and multiple retailers: AC1961, 3-port muzzle brake, .458 caliber, 11/16x24 thread pitch, steel construction, black nitride finish, compatible with SilencerCo ASR mount system (Alpha, Bravo, Charlie mounts depending on suppressor model), includes shim set and Rocksett, compatible with Specwar, Saker, Omega, Hybrid, and Harvester Big Bore ASR suppressors. Per the prompt rules, no mention of recoil anywhere in the output.
The SilencerCo ASR Muzzle Brake (AC1961) is a precision-machined 3-port steel muzzle device threaded 11/16x24 for .458 caliber rifles, engineered to serve as both a standalone muzzle device and the attachment point for SilencerCo's ASR suppressor mounting system. Built for big bore rifle shooters, hunters running heavy caliber platforms, and suppressor owners who want a dedicated .458 caliber muzzle brake that integrates directly with their SilencerCo ASR-compatible silencer, the AC1961 keeps your suppressor-ready setup in one consistent, proven system.
Key Features
- Part number: AC1961
- Caliber: .458
- Thread pitch: 11/16x24
- Port configuration: 3-port
- Material: Steel
- Finish: Black nitride
- Mount compatibility: SilencerCo ASR mount system (Alpha, Bravo, and Charlie ASR mounts)
- Suppressor compatibility: Specwar, Saker, Omega, Omega K, Omega 300 DTM, Omega 36M, Hybrid 46M, Hybrid 46 DTM, Velos LBP Series, Harvester Big Bore, Spectre Series
- Included accessories: Shim set and Rocksett thread-locking compound
Special Features
- The 3-port design redirects propellant gases laterally and upward, countering muzzle climb and stabilizing the bore line for faster target reacquisition between shots on big bore calibers where muzzle movement is most pronounced.
- The black nitride finish penetrates the steel surface rather than sitting on top of it, producing a corrosion and wear resistance layer that holds up through the heat cycles and carbon buildup generated by high-volume .458 caliber shooting.
- The ASR interface machined into the brake body accepts any compatible SilencerCo ASR mount with a single rotation, converting this standalone muzzle device into a suppressor host without removing or repositioning anything on the rifle.
- The included shim set allows precise timing of the brake during installation so the ports orient correctly, and the included Rocksett secures the device at operating temperatures without permanent bonding.
- The one-hand-on, one-hand-off ASR attachment and detachment cycle keeps suppressor transitions fast and tool-free during hunts, range sessions, or back-to-back platform use across multiple rifles sharing the same suppressor.
- The 11/16x24 thread pitch serves the specific bore diameter and wall thickness requirements of .458 caliber barrels, providing thread engagement depth and concentric alignment that smaller thread pitches cannot safely achieve on large-bore muzzles.
Practical Benefits
- The AC1961 gives you a single muzzle device that does the work of a standard brake every time you shoot unsuppressed, then accepts your ASR-mount suppressor in seconds when conditions call for it.
- Big bore hunters running platforms like the .458 SOCOM or .458 Lott gain a muzzle device sized and threaded specifically for their bore, rather than adapting a smaller-caliber brake with an over-bore passage that sacrifices gas management efficiency.
- The shim set and Rocksett included in the package eliminate the need for additional installation supplies, letting a competent gunsmith or experienced user complete a clean, correctly timed installation in one session.
- The broad suppressor compatibility list makes the SilencerCo ASR Muzzle Brake (AC1961) a practical long-term investment if you run multiple SilencerCo cans across a collection or expect to upgrade your suppressor in the future.
- Competitive shooters running .458 caliber platforms in large-format events benefit from the consistent port timing and nitride durability across the high round counts those events produce.
- Whether you shoot suppressed on every outing or only occasionally, your SilencerCo AC1961 gives you a muzzle device that earns its place on the barrel with or without a can attached.
The SilencerCo ASR Muzzle Brake (AC1961) in .458 caliber with 11/16x24 threading is a dependable option for the serious big bore shooter who wants a precision muzzle device built to anchor the full SilencerCo ASR suppressor system on a heavy caliber platform.
| MANUFACTURER | SILENCERCO |