- The Type 100 submachine gun was a Japanese submachine gun used during World War II and the only submachine gun produced by Japan in any quantity. … A few very early models, without the muzzle brake, but with a bipod and a sight up to 1,500 meters (the “cavalry variant” of the Model 3B), were captured by the British in the late stages of the …
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Type 100 - IOP Wiki
The Type 100 submachine gun (一〇〇式機関短銃, … (the “cavalry variant” of the Model 3B), were captured by the British in the late stages of the Burma Campaign, brought in by Japanese reinforcements. As the war continued, the demand for submachine guns increased greatly. In January 1944, larger scale production of the Type 100 started.