The WW2 Double-Magazine MP40/I
This guide details the operational procedure for the rare WW2 MP40/I submachine gun prototype, as demonstrated by Ian McCollum. It explains how to switch between its dual 32-round magazines using a unique sliding block mechanism to increase sustained fire capability against Soviet PPSh-41 variants. The process involves firing the first magazine, releasing a latch, and sliding the block to engage the second magazine.










