CODE 04-041-971
NAME u2013 HK 23
COUNTRY OF ORIGIN u2013 Germany
DATE OF MANUFACTURE u2013 1971
CALIBER u2013 5.56x45mm NATO
OVERALL LENGTH u2013 101.6 cm (40 in)
BARREL LENGTH u2013 45 cm (17.72 in) without flash suppressor
RIFLING (TYPE & TWIST) u2013 6 Groove, Right-hand twist, 1 turn in 30.5 cm (12 in)
LOAD u2013 M193 Ball Spitzer-pointed full metal jacket
BULLET DIAMETER u2013 5.69 mm (0.224 in)
BULLET WEIGHT u2013 3.56 g (55 grains)
MUZZLE VELOCITY u2013 970 m/s (3,181 fps)
MUZZLE ENERGY u2013 1,676 j (1,236 ft/lb)
WEIGHT (EMPTY) u2013 7.95 kg (17 lb 8 oz)
WEIGHT (LOADED) u2013 11.01 kg (24 lb 4 oz) loaded with belt box holding 200-round belt M193 ball
WEIGHT (MOUNTED) u2013 11.83 kg (26 lb 1 oz) with bipod, sling, support grip, loaded with belt box holding 200-round belt M193 ball
TYPE OF MOUNT u2013 Folding removable bipod
WEIGHT OF MOUNT u2013 0.55 kg (1 lb 3 oz)
WEIGHT OF SPARE BARREL u2013 1.6 kg (3 lb 8 oz) with flash suppressor
WEIGHT OF SLING u2013 0.17 kg (6 oz)
WEIGHT OF SUPPORT GRIP u2013 0.10 kg (3.5 oz)
SIGHTS u2013 Open, iron, adjustable, Front sight u2013 Hooded post, Rear sight, aperture with rotating elevation drum, 100 meters click stops (109 yard) graduated 100 to 1000 meters (109 to 1,094 yards)
OPTICAL SIGHT u2013 ZF 4×24
OPTICAL SIGHT WEIGHT u2013 0.65 kg (1 lb 7 oz) with mount
OPTICAL SIGHT MAGNIFICATION u2013 4 Power
OPTICAL SIGHT FIELD OF VIEW u2013 5 degrees 40 minutes – 10 m @ 100 m (30 ft @100 yds)
OPTICAL SIGHT ADJUSTMENTS u2013 Adjustable for windage and elevation, 6 adjustments from 100 to 600 m (109 to 656 yards)
EFFECTIVE RANGE u2013 1,000 m (1094 yards)
OPERATION u2013 Blowback, Delayed roller locked bolt system, fires from closed bolt
TYPE OF FIRE u2013 Selective, semi and full automatic
RATE OF FIRE u2013 50 rpm semi, up to 120 rpm full automatic
CYCLIC ROF u2013 800 rpm
FEED DEVICE u2013 M27 disintegrating metallic link belt
FEED DEVICE WEIGHT (EMPTY) u2013 200 M27 links u2013 0.414 kg (14.6 oz)
200-round belt box (Empty) u2013 0.70 kg (1 lb 9 oz)
FEED DEVICE WEIGHT (LOADED) u2013 2.36 kg (5 lb 3 oz) 200 rounds M193 ball in M27 links
200-round belt box (LOADED) u2013 3.06 kg (6 lb 12 oz) loaded with 200 rounds M Ball in M27 link belt
BASIC AMMUNITION LOAD u2013 Five 200-round belts (1,000 rounds)
LOAD WEIGHT u2013 11.8 kg (26 lb)
MANUFACTURER u2013 Heckler & Koch GmbH, Oberndorf/Neckar, Germany
STATUS u2013 Production completed
SERVICE u2013 International sales
