NAME – Type 100 Paratrooper

COMMON NAMES – Type 100 Navy, Type 100/40(N)

COUNTRY OF ORIGIN – Japan

DATE OF MANUFACTURE – 1940-1942

CALIBER – 8×22 mm (8mm Japanese, 8mm Nambu) 11.5 g (177.5 gr) ctg wt

OVERALL LENGTH – 56.5 cm (22.25 in) (Stock folded), 83.4 cm (34 in) (Stock open)

BARREL LENGTH – 23.4 cm (9.2 in)

RIFLING (TYPE & TWIST) – 6 groove, Right hand twist, 1 turn in 20 cm (7.88 in)

BULLET DIAMETER – 8.13 mm (0.320 in)

BULLET WEIGHT – 7 g (107 gr)

MUZZLE VELOCITY – 335 m/s (1100 fps)

MUZZLE ENERGY – 390 j (288 ft/lbs)

WEIGHT (EMPTY) – 3.40 kg (7 lbs 8 oz)

WEIGHT (LOADED) – 3.95 kg (8 lbs 11.2 oz)

SIGHTS – Front sight – Blade, Rear sight – aperture, set at 100 meters

EFFECTIVE RANGE – 200 m (220 yds)

OPERATION – Blowback

TYPE OF FIRE – Full automatic

RATE OF FIRE – 120 rpm

CYCLIC ROF – 450 rpm

FEED DEVICE – 30 round curved box magazine, double column, double feed

FEED DEVICE WEIGHT (EMPTY) – 0.20 kg (7 oz)

FEED DEVICE WEIGHT (LOADED) – 0.55 kg (1 lb 3.2 oz)

BASIC AMMUNITION LOAD – 5 magazines (150 rounds)

LOAD WEIGHT – 2.75 kg (6 lbs 1 oz)

MANUFACTURER – Nagoya Arsenal, Japan

STATUS – Obsolete

SERVICE – Japanese military, primarily the Imperial Japanese Navy for their Marine Paratroops. Guerrilla and Revolutionary use throughout Asia into the 1960s, dependent on availability of ammunition

     This is a folding stick version of the Type 100 submachinegun, intended to be slightly lighter but more compact than the original weapon. The Airborne units that were intended to receive this weapon were members of the Japanese Navy’s Marines Paratroops. An unusual feature of the original Type 100 and the Paratrooper version is the thick cylinder underneath the barrel. The cylinder is provided as the mount for the Japanese Type 30 bayonet. The bayonet was the standard version issued throughout the Japanese military. It weighed 0.70 kg (1lb 8.7 oz) had an overall length of 51.4 cm (20.24 in) and a blade 40 cm (15.75 in) long. Mounting the bayonet underneath the barrel made the weapon 124.5 cm (49 in) long. One complaint from the troops who used this weapon was that the folding stock made the submachinegun too weak for hand-to-hand combat as it would break if the target was struck with the butt.