CODE – 04-062-931
NAME – Type 91 “Tanker” Machine Gun
COUNTRY OF ORIGIN – Japan
DATE OF MANUFACTURE – 1931
CALIBER – 6.5x50mmSR (6.5mm Arisaka)
OVERALL LENGTH – 83.8 cm (33 in)
BARREL LENGTH – 48.8 cm (19.2 in)
RIFLING (TYPE & TWIST) – 4-Grooves, Right-hand twist, 1 turn in 20 cm (7.87 in)
LOAD – Spitzer-type full jacketed ball
BULLET DIAMETER – 6.65 mm (0.262 in)
BULLET WEIGHT – 9.01 g (139 grains)
MUZZLE VELOCITY – 729 m/s (2390 fps)
MUZZLE ENERGY – 2391 j (1763 ft/lb)
WEIGHT (EMPTY) – 10.15 kg (22 lb 6 oz)
WEIGHT (LOADED) – 11.25 kg (24 lb 13 oz) loaded with 50 rounds 6.5mm ball on ten stripper clips
TYPE OF MOUNT – Armored vehicle
SIGHTS – None, telescopic sight can be attached to the vehicle machine gun port
EFFECTIVE RANGE – 600 m (656 yards)
OPERATION – Gas, fires from open bolt
TYPE OF FIRE – Full automatic
RATE OF FIRE – 80-120 rpm
CYCLIC ROF – 450 rpm
FEED DEVICE – Removable 60-round Hopper, loaded with 10 stripper clips
FEED DEVICE WEIGHT (EMPTY) – 0.007 kg (0.25 oz) 5-round stripper clip
FEED DEVICE WEIGHT (LOADED) – 0.11 kg (3.9 oz) Loaded 5-rd stripper clip, 1.10 kg (2 lb 7 oz) Ten 5-round stripper clips loaded with 6.5 mm ball
BASIC AMMUNITION LOAD – Twelve cases of twenty-four 5-rd stripper clips each (1440 rounds)
LOAD WEIGHT – 31.68 kg (69 lb 14 oz) – Two hundred eighty eight loaded stripper clips
MANUFACTURER – Kokura Military Arsenal, Kokura Prefecture, Japan, Nagoya Arsenal, Tokyo Gas and Electric, Hitachi Manufacturing Co.
STATUS – Obsolete
SERVICE – Imperial Japanese Army
