Patent ID: 8671607

Claim:
A breech plug for a muzzle loading firearm having a barrel, the barrel having a muzzle end and a breech end, a breech element connected to the barrel, the breech element having a breech face, the breech element being movable between an open position in which the breech face is away from the breech end of the barrel, and a closed position in which the breech face is in registration with the breech end of the barrel, the breech plug adapted to receive a primer and comprising: a breech plug body removably attachable to the breech end of the barrel, the breech plug body defining a primer pocket that is enclosed when the breech element is in the closed position such that the primer, when positioned within the primer pocket, is fully supported on all sides; and wherein the primer pocket is at least in part defined by an extractor movably connected to the breech plug body.