The magazine feeds from a central column, resulting in a fixed center of gravity while firing. These lightweight 75-round polymer 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. Constructed of steel, it has a clear polymer back plate. Technical Specifications Weight 2.1lbs Color Black/Clear Compatible with AK-47 Caliber 7.62x39mm Capacity 75 rounds Body Material Steel/Polycarbonate Spring Material Leaf spring