Patent attributes
A loadable ammunition magazine for use with a sporting firearm includes a housing defining a cartridge-loading compartment and a follower compartment, a cover that alternately covers and reveals the cartridge-loading compartment, and a follower that urges cartridges in the cartridge-loading compartment towards a mouth of the magazine. A locking assembly prevents the magazine from being detached from the lower receiver of the firearm without disassembly of the firearm action designed for use with AK-47-style rifles having stamped receivers, the locking assembly comprises a locking bar including a horizontal lower flange that is secured by a threaded fastener to the top wall of the magazine housing and a horizontal upper flange that rests on the cross rivet of the receiver. In another embodiment, designed for use with AK-47-style rifles having machined receivers, the locking assembly comprises a locking bar including a horizontal upper flange that is secured by a threaded fastener to the top wall of the magazine housing and a horizontal lower flange that rests on the bottom wall of the receiver.