OPEN CHAMBER MECHANISM AND AMMUNITION

摘要

Aspects described herein relate to an open chamber firearm comprising a frame and a cylinder assembly that forms an open chamber positioned for rotation within the frame, said open chamber including an insert positioned within the open chamber, the insert forming an expandable region between the open chamber and cylinder. Aspects described herein also relate to an ammunition round for an open chamber firearm, the round comprising a housing having a triangular shaped cross section and a central longitudinal axis, the housing including at least one projectile positioned along the central longitudinal axis, a propellant positioned behind the at least one projectile, a first sealed end located at a first end of the housing nearest the propellant, and a second sealed end positioned at a second end of the housing in front of the projectile, wherein the second sealed end is configured to become unsealed after firing of the projectile.