Patent ID: 6912806

Claim:
In a small firearm having a frame; a barrel on the frame and having a rear end; a tube magazine on the frame adapted to hold a plurality of cartridges and having a rear end opening adjacent the rear end of the barrel; means including a feed mechanism in the frame for moving the cartridges from the rear end of the tube magazine into the rear end of the barrel; and means including a breech mechanism displaceable from a rear position into a forward position for closing the rear end of the barrel and firing a cartridge in the rear end of the barrel, the improvement comprising a detachable magazine adapted to hold a plurality of cartridges; an opening formed on the frame adjacent the rear end of the tube magazine and adapted to fit with and releasably hold the detachable magazine; and shifting means in the frame for displacing the feed mechanism between a tube-loading position blocking the opening and effective for feeding cartridges from the tube magazine to the barrel and a clip-loading position clear of the opening and allowing the detachable magazine to be fitted to the opening.