초록 ▼

A drum magazine particularly intended for feeding shotgun shells to a firearm such as an autoloading assault shotgun. The drum magazine includes a cartridge-carrying rotor having a pair of sprockets, and powered by a torsion spring disposed on a central post within the drum. A last-round cartridge f

A drum magazine particularly intended for feeding shotgun shells to a firearm such as an autoloading assault shotgun. The drum magazine includes a cartridge-carrying rotor having a pair of sprockets, and powered by a torsion spring disposed on a central post within the drum. A last-round cartridge follower, removably carried by the rotor, can move either to a radially-extended position to feed the last round from the drum, or to a position of reduced effective radius to accommodate the first round in the fully-loaded drum. The drum magazine is adaptable to shells of different lengths.

대표청구항 ▼

A drum magazine for storing and feeding rounds of ammunition to a firearm, comprising: a body; a rotor within said body and biased for rotation; a plurality of discrete round-receiving recesses defined about the periphery of said rotor to engage and carry a corresponding plurality of rounds along a

A drum magazine for storing and feeding rounds of ammunition to a firearm, comprising: a body; a rotor within said body and biased for rotation; a plurality of discrete round-receiving recesses defined about the periphery of said rotor to engage and carry a corresponding plurality of rounds along a path within said body; extension means extending from said body for placement in round feeding relation with a firearm, said extension means having a round-feeding opening and means providing a round feeding path between the extension means and said rotor so that the biased rotation of the rotor serially moves each round-receiving recess to the extension means; follower means carried by said rotor behind the last round-receiving recess to arrive at the extension means, said follower means operatively assuming a radially extended first position to engage the last round and displace that round outwardly from the rotor recess toward said round-feeding opening when the last round-receiving recess is in round feeding relation to the extension means; and said follower means being movable inwardly to a second position to allow the rotor to be moved past the fully loaded position, thereby providing sufficient room to enable a closed first round of the fully-loaded drum magazine to be displaced in said extension means by the presence of a closed bolt in the firearm when the magazine is placed on the firearm.