Patent ID: 8342071

Claim:
A flash suppressor for use with a firearm having a firearm muzzle, comprising: a generally cylindrical body having a longitudinal axis, a muzzle end, and an exit end; a passage extending through the body and along the longitudinal axis, the passage having a mount portion for mounting the flash suppressor to the firearm muzzle, a transition portion, an intermediate portion, and a truncated conical portion having a diameter that increases toward the exit end; and a set of apertures extending through the body and into the truncated conical portion for channeling propellant gases, wherein the set of apertures are arranged into a plurality of subsets of apertures each of the plurality of subsets of apertures being radially aligned with each other about the longitudinal axis and each of the plurality of subsets of apertures comprising a plurality of openings longitudinally aligned with each other in a direction towards the muzzle end and wherein each of the plurality of subsets of apertures are parallel to the longitudinal axis and wherein each of the plurality of subsets of apertures slant towards the muzzle end as the progress from an outer surface of the flash suppressor towards the longitudinal axis; the transition portion joining the mount portion and the intermediate portion, and the intermediate portion joining the transition portion and the truncated conical portion.