ABC RIFLE COMPANY AR-15 Flat Top Multi Chamber Muzzle Brake 1/2x28 Phosphate Black. The multi-chamber design vents gases effectively promoting faster follow-up shots and enhanced shooting control. It features a 1/2x28in thread pitch for compatibility with standard AR-15 barrels chambered in 5.56 NATO or .223 Remington. The flat top profile offers a sleek low-profile aesthetic while maintaining performance. Ideal for tactical competition or custom builds where precision and control matter. Specifications for ABC RIFLE COMPANY AR-15 Flat Top Multi Chamber Muzzle Brake: Manufacturer: ABC RIFLE COMPANY Color: Black Caliber: 5.56x45mm NATO .223 Remington Finish: Phosphate Fabric/Material: Steel Threads per Inch: 1/2x28 Gun Make: AR Platform Gun Model: AR-15 Outer Diameter: 0.89 in Length: 2.2 in Weight: 3 oz Gun Type: Rifle Package Contents: ABC RIFLE COMPANY AR-15 Flat Top Multi Chamber Muzzle Brake What firearm models does the manufacturer say ABC RIFLE COMPANY AR-15 Flat Top Multi Chamber Muzzle Brake is compatible with? The manufacturer suggests that ABC RIFLE COMPANY AR-15 Flat Top Multi Chamber Muzzle Brake is compatible with AR-15ABC RIFLE COMPANY MB15-PRO: AR-15 Flat Top Multi Chamber Muzzle Brake 1/2x28 Phosphate Black