The magazine feeds from a central column, resulting in a fixed center of gravity while firing. These 75-round steel drum magazines load from the back, so you don’t have to insert rounds under tension. Ready for any contingency, they can be stored indefinitely at the full 75 round capacity with no tension on the spring. When ready for use, twist the central crank to provide proper spring tension. Disassembly for cleaning and lubrication is simple. Technical Specifications Weight 2.1lbs Color Black Compatible with AK-47 Caliber 7.62x39mm Capacity 75 rounds Body Material Steel Spring Material Leaf spring