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CODE 03-041-973
NAME – HK53
COUNTRY OF ORIGIN – Germany
DATE OF MANUFACTURE – 1973
CALIBER – 5.56x45mm
OVERALL LENGTH – 56.3 cm (22.17 in) with stock collapsed, 75.5 cm (29.72 in) with stock extended
BARREL LENGTH – 21.1 cm (8.31 in) without flash hider
RIFLING (TYPE & TWIST) – Polygonal, 6-Grooves, Right-hand twist, 1 turn in 30.5 cm (12 in)
LOAD – M193 Ball, Spitzer-pointed full metal jacket
BULLET DIAMETER – 5.70 mm (0.224 in)
BULLET WEIGHT – 3.56 g (55 grains)
MUZZLE VELOCITY – 881 m/s (2889 fps)
MUZZLE ENERGY – 1382 j (1019 ft/lb)
WEIGHT (EMPTY) – 3.05 kg (6 lb 12 oz)
WEIGHT (LOADED) – 3.60 kg (7 lb 15 oz) loaded with 25 rounds M193 Ball
SIGHTS – Open, iron, adjustable, Front sight – Post in hooded sight ring, Rear sight – Rotary vertical drum with diopter and V-notch sights, V-notch and #2 peep are set for 200 meters (219 yards), #3 Peep is for 300 meters (328 yards) and #4 peep is for 400 meters (438 yards). Rear sight is screw adjustable for windage and elevation for zero.
EFFECTIVE RANGE – 300 m (328 yards)
OPERATION – Blowback, Delayed roller locked bolt system
TYPE OF FIRE – Selective, Semi and Full automatic
RATE OF FIRE – 40 rpm semi, 100 rpm full automatic
CYCLIC ROF – 700 rpm
FEED DEVICE – 25 round curved steel removable box magazine, double column, double feed
FEED DEVICE WEIGHT (EMPTY) – 25 rnd – 0.25 kg (8.8 oz), 30 rnd – 0.27 kg (9.5.27 oz)
FEED DEVICE WEIGHT (LOADED) – 25 rnd – 0.55 kg (1 lb 3 oz) loaded with 25 rounds M193 Ball
BASIC AMMUNITION LOAD – Four 25-round magazines (100 rounds)
LOAD WEIGHT – 2.2 kg (4 lb 14 oz)
MANUFACTURER – Heckler & Koch GmbH, Oberndorf/Neckar, Germany
STATUS – Production completed
SERVICE – Military and law enforcement, International sales and licensed production
This is a submachinegun-sized variation of the HK 33K, effectively a very compact 5.56mm carbine.
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