75rds of 7.62x39mm in a single magazine turns an SKS into a proper range companion. This RWB drum is built from steel, and the hinged back plate swings open for loading, so rounds drop in place instead of being forced against full spring tension one at a time.Surplus rifles get shot a lot because the guns are plain fun to run, and a drum this size means long stretches of trigger time between reloads. Steel construction carries the weight of a full load without flexing, and the hinged design makes topping off between strings quick work.