A3 Industries 1/2-28 Thread Wraith Muzzle Brake 4140 Steel

A3 Industries 1/2-28 Thread Wraith Muzzle Brake 4140 Steel. Features include a large initial expansion chamber to dissipate the majority of combustion gases at lower pressures then a secondary smaller chamber and forward ports to dissipate the remaining gases. Closed bottom greatly diminishes dust signature when lying prone. Machined from high strength 4140 and Melonite nitrited for a long-lasting finish. Crush washer included for indexing on barrel. Specifications for A3 Industries Wraith Muzzle Brake: Manufacturer: A3 Industries Color: Black Projectile Caliber: .355 Caliber Caliber: 9mm Luger Finish: Melonite Barrel Material: 4140 Steel Inner Diameter: 1.5 in Length: 1.75 in Weight: 2.3 oz Features of A3 Industries Wraith Muzzle Brake 4141 STEEL Strong Melonite surface coating reduced dust signature Package Contents: A3 Industries Wraith Muzzle Brake A3 Industries MB-1001-12: 1/2-28 Thread Wraith Muzzle Brake 4140 Steel