Patent ID: 7877918

Claim:
A firearm comprising: a frame defining an open topped magazine cavity; a stack of separately movable open ended chamber tubes each loaded with a cartridge, said stack of open ended chamber tubes held in said magazine cavity, with a feed spring urging said stack of chamber tubes upwardly therein; a firing recess defined in said frame aligned with the open top of said magazine cavity, said firing recess configured to receive therein a topmost chamber tube in said stack urged upwardly by said feed spring; said frame also including a barrel with a bore therein aligned with said firing recess; a topmost chamber tube in said stack held against a contoured surface defining in part said firing recess by the urging of said feed spring, said firing recess having an opening on one side configured to define an ejection port for ejection of said chamber tubes as well as exposing said topmost chamber tube therein to view and allowing touching contact so as to allow an easy and reliable determination if the firearm is ready to fire; a space allowing high pressure gas generated by firing a cartridge to be directed against a side of said topmost chamber tube remote from the side of said firing recess having said opening therein to force said topmost chamber tube containing an empty cartridge casing and out through said opening on one side of said firing recess to thereby be automatically ejected from said firearm after firing of said cartridge loaded therein; and a firing mechanism for selectively firing a cartridge in the topmost chamber tube located in said firing recess.