Patent ID: 8800419

Claim:
A compensating apparatus configured to be affixed to a muzzle of a gun having a gun barrel, the apparatus comprising: a muzzle engagement recess configured to be positioned coaxial to and longitudinally forward of said gun barrel; an expansion chamber comprising: a front wall; a ceiling extending from the muzzle engagement recess to the front wall; a curved thrust surface extending from the front wall and facing the muzzle; a compression ramp extending longitudinally from the muzzle engagement recess to the curved thrust surface; first and second lateral walls extending from the muzzle engagement recess to the front wall and from the ceiling to the compression ramp; a departure recess defined in the front wall and positioned longitudinally forward of and coaxial to said gun barrel and said muzzle engagement recess; and a plurality of exhaust ports defined in the first and second lateral walls proximal to the curved thrust surface, wherein the expansion chamber defines an asymmetric internal volume expanding downward relative to the longitudinal axis of the gun barrel.