Patent ID: 7908780

Claim:
An ammunition magazine comprising: a. A casing having a mostly rectangular cross-section with fore and aft sides and two longer lateral sides and first and second open ends, the casing further comprising: two guide rails extending a length of the magazine, from the first open end to the second open end and each one situated opposite the other along the lateral sides of the casing, the guide rails extending at least mostly to the first open end and each presenting a flat forward surface, roughly parallel to the fore side; a constant internal curve initiating at the second open end and continuing through a majority of the casing of the magazine, though not as far as the guide rails; and an internal ridge, located on the fore side of the magazine and extending from the second end of the magazine at least as far as the guide rails toward the first open end, an uppermost point of the ridge being defined as a terminus; b. A follower residing within the casing, said follower further comprising: i. A follower platform with two opposite tines at fore and aft positions and extending generally perpendicularly and distally therefrom; and ii. Two side fins situated to interface with the casing's guide rails; c. A floor plate capable of interfacing the magazine at the second end; and d. A follower spring residing between the follower and floor plate; wherein the tines and the side fins limit rotation of the follower within the casing.