Comstock Armory Compact Muzzle Brake .578x28 - .45 Cal Bore Plan-B Compatible Suppressor Mount

Comstock Armory Compact Muzzle Brake .578x28 - .45 Cal Bore
Plan-B Compatible Suppressor Mount

Built for durability and suppressor performance, this Compact Muzzle Brake (MBC) is compatible with common .900″-24 adapters such as the Comstock LPA, Q Plan-B, and Rearden Atlas. Designed to reduce recoil and extend suppressor life, the MBC also functions as a sacrificial blast baffle, significantly minimizing blast baffle wear during high-volume shooting.

Unlike traditional directional brakes, this model features a rotationally symmetric design, eliminating the need for shims or timing—making installation simple and efficient.

Precision machined from 17-4 PH stainless steel and finished in a tough black nitride coating, it offers exceptional strength, corrosion resistance, and long-term reliability. The .578x28 thread pattern makes it compatible with many common rifle-caliber barrels.

.900″-24 Adapter Compatible
Works with Comstock LPA, Q Plan-B, Rearden Atlas, and similar systems.

Sacrificial Baffle Design
Reduces blast baffle wear and protects your suppressor.

Recoil Reduction
Improves control and faster follow-up shots.

No Timing Required
Symmetrical design eliminates the need for shims.

17-4 PH Stainless Steel
High-strength, heat-resistant construction.

Black Nitride Finish
Superior wear and corrosion resistance.

.578x28 Threads
Compatible with many common rifle barrels.

13/16″ Wrench Flats
Easy installation and removal.

Specifications

• Barrel Thread: .578x28
• Adapter Interface: .900″-24
• Material: 17-4 PH Stainless Steel
• Finish: Black Nitride
• Overall Length: 1.6″
• Added Length to Muzzle: 0.97″
• Weight: 1.6 oz
• Caliber Compatibility: Up to .45 caliber (including .45 ACP, .450 Bushmaster, .458 SOCOM, etc.)