Partially closed muzzle brake for reducing high-and large-sized setback in e.g. long guns, has chambers for screwing surfaces, where bore diameters of surfaces run forward, so that lattice is formed at left and right sides of chambers

摘要

The brake has inner chambers (1) for screwing bouncing surfaces (2) with circulating pressure relief holes (4). Bore diameters of the bouncing surfaces run forward conically, so that an oval hole lattice is formed at left and right sides of the chambers. The chambers have different sizes, and conic bore diameters of the bouncing surfaces are of 11 mm and 8.2 mm, where the diameters are adjusted for different sizes. An eight degree bevel (5) is formed at an opening, and outside diameter of the brake is larger than diameter of a gun barrel.