Silencer Co ASR Muzzle Brake | .30 Cal | 5/8-24 | AC591

The Silencer Co ASR Muzzle Brake AC591 is a three-port muzzle brake designed for .30-caliber firearms with a 5/8-24 thread pattern. It interfaces with SilencerCo ASR-style mounts for quick one-hand-on, one-hand-off attachment and detachment. Constructed from steel with a black finish, the brake ships with a shim set and Rocksett for installation. The three-port geometry is intended to reduce felt recoil and muzzle climb to aid follow-up shot control.

Product Specifications

• The manufacturer is Silencer Co.
• The model is ASR.
• The manufacturer’s part number is AC591.
• The thread pattern is 5/8″-24 tpi.
• The caliber fit is listed as .30 caliber / 7.62mm.
• The material is Steel.
• The finish is Black.
• The product type is Muzzle Brake.
• Fit compatibility is listed as Specwar, Omega, Harvester.
• Included with the brake is a shim set and Rocksett for installation.
• The NFA thread pattern is 5/8×24.
• The length is listed as 2.5.
• The width is listed as 1.1.
• The height is listed as 1.1.
• The UPC is 817272011432.

Engineered for users who run ASR-compatible muzzle devices, the AC591 provides a robust steel construction and practical feature set that suits precision shooting and range training where reduced recoil and faster recovery are priorities. Its compatibility with multiple ASR-style mounts makes it a flexible choice for rifles chambered in .30-caliber platforms.