Patent ID: 7594464

Claim:
Apparatus comprising: a firearm having a barrel extending along a longitudinal axis; a muzzle fixture secured to said barrel and having an axial passageway along said longitudinal axis and a lateral vent; and a sound suppressor body including a sound suppressing front section and a back section receiving said muzzle fixture, said back section including a forward chamber communicating with said front section and situated generally forwardly of said muzzle fixture, a first lateral chamber communicating with said vent, and second lateral chamber, said second lateral chamber and said forward chamber communicating with each other, and wherein: said muzzle fixture includes a forward portion including said vent; said forward chamber includes a forward facing annular wall about an opening to said axial passageway of said muzzle fixture; said first lateral chamber circumferentially surrounds said forward portion of said muzzle fixture; and said second lateral chamber circumferentially surrounds said first lateral chamber.