Japanese Contract Steyr-Solothurn S1-100 (aka MP34)
This review details the Japanese contract Steyr-Solothurn S1-100 (MP34), a high-quality pre-WWII submachine gun. It highlights its milled receiver, unique stripper clip guide, and select-fire capabilities. The specific Japanese contract model in 7.63 Mauser was acquired due to domestic development challenges.









