new weapon as the interest of the army had turned to the new 7.7 mm Type 99 light machine gun. There was no need for a "submachine gun" in the Imperial Army tactics. Under a low-priority military contract the Type 100 began to be deployed in August 1942, with numbers not exceeding 1,000 units, of which around 200 were converted to folding stock models for use by army paratroopers. These were converted (along with similar designs for Arisaka rifles) after trouble with weapons being dropped in bags separately from the paratroopers, such as in the Battle of Palembang, and were intended to be stored in a bag attached to the stomach of the jumper. The paratrooper version was referred to by the allies as the "Type 100 navy". Limited numbers of the early Type 100 model were delivered to the Solomon Islands in late 1942 for military trials. A small batch was delivered to Guadalcanal, but the rest of the shipments were sunk before reaching their targets. 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 Burma Campaign, brought in by Japanese reinforcements. Of the paratrooper variant, some were captured on Luzon during the Philippines Campaign. Late version As the war continued, the demand for submachine guns increased greatly. In January 1944, under contract to the army, larger scale production of the Type 100 started. In connection with the lower quality "substitute standard" variants of other Japanese weapons to increase speed and reduce cost of manufacture, a number of changes were made to simplify the Type 100. This led to the later 1944 model of the Type 100, known in the west as the "Type 100/44". The 1944 variant was slightly longer, with simple iron sights and a greatly simplified muzzle brake consisting of two ports drilled in the barrel. The large bayonet mounting bar were eliminated, with the bayonet to be fitted to the barrel instead; consequently, the muzzle protruded more from its perforated jacket. Corners were cut in production, leaving many Type 100s with roughly finished stocks with roughly welded metal. The resulting weapon demonstrated good reliability with low recoil and satisfactory accuracy for close-range work. Some 7,500 were made produced in total. According to Japanese historian , a