Silencer Co ASR Brake AC857 | 5/8×24 | .338 Cal

The Silencer Co ASR Muzzle Brake (AC857) is a three-port muzzle device built for compatibility with the ASR mounting system. It uses a 5/8×24 thread pattern and is specified for .338 caliber platforms. Constructed of steel with a black finish, the design reduces felt recoil and muzzle climb while allowing one-hand-on, one-hand-off attachment and detachment with ASR-equipped suppressors.

Typical applications include big-bore precision shooting and long-range hunting platforms where quick ASR attachment and recoil mitigation are beneficial.

Product Specifications

• The manufacturer is Silencer Co.
• The model is ASR.
• The manufacturer’s part number is AC857.
• The thread pattern is 5/8×24.
• The NFA thread pattern is 5/8×24.
• The listed caliber is .338 Cal.
• The material is Steel.
• The finish is Black.
• The product type is Muzzle Brake.
• The device features a 3-port design intended to reduce felt recoil and muzzle climb.
• The brake is compatible with the ASR mounting system and listed compatible devices including Omega 300, Chimera 300, Hybrid 46M, Omega 36M, Saker ASR series, Hybrid 46, Harvester Series, Octane Series, and Omega K Series.
• The package includes a shim set and Rocksett for installation.
• The UPC is 817272011838.
• The listed weight is 0.25 (units not specified in source data).
• The listed length is 2.4 (units not specified in source data).

This ASR muzzle brake provides a durable, ASR-compatible option for .338-caliber rifles that need reliable recoil mitigation without sacrificing quick attach/detach capability. Its steel construction and included shim set make installation straightforward on properly threaded barrels, and the three-port layout helps control muzzle rise for follow-up shots in precision or field applications.

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