The Angled Spade Technologies Dominion Plan B Muzzle Brake is a compact, radial-ported muzzle device designed to help manage recoil while providing a mounting interface for compatible suppressors. Featuring a tapered Plan B suppressor mounting system, the Dominion allows users to attach suppressors equipped with compatible Plan B adapters. Its radial port configuration eliminates the need to time the muzzle brake during installation, while the tapered interface helps maintain suppressor alignment and reduces fouling on the mounting threads.

Constructed from 17-4 PH stainless steel with a Melonite QPQ finish, the Dominion Plan B Muzzle Brake measures 1.7 inches long, 0.9 inches in diameter, and weighs 1.8 ounces. Available in 1/2×28 and 5/8×24 thread configurations with multiple bore options, the Dominion supports applications ranging from 5.56mm and 9mm to 7.62mm and 8.6mm cartridges. Its compact design combines recoil management with a Plan B-compatible suppressor mounting interface for a range of rifle and pistol-caliber platforms.

Core Specifications

• Material: 17-4 PH Stainless Steel
• Finish: Melonite QPQ
• Muzzle Device Type: Radial-Ported Muzzle Brake
• Suppressor Mounting Interface: Plan B-Style Tapered Mount
• Overall Length: 1.7 in
• Diameter: 0.9 in
• Weight: 1.8 oz
• Available Thread Pitches: 1/2×28, 5/8×24
• Available Bore Configurations: 5.56mm, 9mm, 7.62mm, 8.6mm
• Timing Required: No
• Mounting Design: Tapered Interface
• Suppressor Compatibility: Compatible Plan B Suppressor Adapters
• Function: Recoil Management and Suppressor Mounting

Thread & Caliber Compatibility

• 5.56mm Bore | 1/2×28: Supports calibers up to 5.56mm.
• 9mm Bore | 1/2×28: Supports calibers up to 9mm, including .357 Magnum and .38 S&W.
• 7.62mm Bore | 5/8×24: Supports calibers up to 7.62mm.
• 8.6mm Bore | 5/8×24: Supports calibers up to 9mm, including compatible .338-caliber cartridges.

At a glance