The only Sub-Machine Gun developed by The Imperial Japanese Army, The Type 100 came in several variations, depending on Service deployment. One such, featured a folding metal "wire" gun stock (for Paratrooper usage). It is speculated that upwards of 27,000 Type 100s were manufactured between 1942 and 1945. The Standard Infantry version featured the 20mm Nambu round. The Type 100 weighed 9-pounds and was 35-inches long. It maintained a 450-rpm cyclic rate of fire, using 30-round side receiver mounted clips. The maximum range of The Type 100 was between 100-150 yards. Modeled in part after Germany's MP 18, The Type 100 suffered from several design flaws. These being it's overall weight and malfunctions due to environment (dirt). Nonetheless, it saw extensive service in many of Japan's Island Defense campaigns in World War II.