CODE – 02-041-999
NAME – UMP45
NAME (NATIVE) – Universal Machine Pistol 45
COUNTRY OF ORIGIN – Germany
DATE OF MANUFACTURE – 1999
CALIBER – 11.43x23mm (.45 ACP)
OVERALL LENGTH – 45 cm (17.72 in) Stock folded, 69 cm (27.17 in) Stock open
OVERALL LENGTH WITH SUPPRESSOR MOUNTED – 62 cm (24.41 in) Stock folded, 86 cm (33.86 in) Stock open
BARREL LENGTH – 20 cm (7.87 in)
SUPPRESSOR LENGTH – 21.3 cm (8.4 in)
SUPPRESSOR DIAMETER – 3.6 cm (1.4 in)
RIFLING (TYPE & TWIST) – 6x Polygonal, Right-hand twist, 1 turn in 40.6 cm (1 turn in 15.98 in)
BULLET DIAMETER – 11.5 mm (0.451 in)
BULLET WEIGHT – 14.5 g (230 grains)
MUZZLE VELOCITY – 260 m/s (853 fps)
MUZZLE ENERGY – 504 j (372 ft/lb)
WEIGHT (EMPTY) – 2.26 kg (4 lb 15.72 oz)
WEIGHT (LOADED) – 2.96 kg (6 lb 8.4 oz) with 25 rounds
WEIGHT (LOADED) WITH SUPPRESSOR – 3.34 kg (7 lb 5.8 oz) with suppressor and 25 rounds
SUPPRESSOR WEIGHT – 0.38 kg (13.4 oz)
SUPPRESSOR MOUNTING – Fast-attaching flange on barrel
SUPPRESSOR OPERATION – Muzzle expansion chamber, multiple complex baffle stack
SUPPRESSOR DECIBLE REDUCTION – 28 db down from 151 db
SIGHTS – Open iron, Rear sight – aperture, adjustable for windage and elevation, factory zeroed to 25 meters (27 yards), Front sight – Ring protected post.
EFFECTIVE RANGE – 150 m (164 yards)
OPERATION – Blowback, fires from closed bolt
TYPE OF FIRE – Selective, Semiautomatic, Controlled burst, Full automatic
RATE OF FIRE – 40 rpm Semiautomatic, 80 rpm Full automatic
CYCLIC ROF – 600 rpm
FEED DEVICE – 25-round polymer removable box, double column, double feed
FEED DEVICE WEIGHT (EMPTY) – 0.17 kg (6 oz)
FEED DEVICE WEIGHT (LOADED) – 0.70 kg (1 lb 8.7 oz)
BASIC LOAD – Four – 25-round magazines (100 rounds)
LOAD WT – 2.80 kg (6 lb 2.8 oz)
MANUFACTURER – Heckler & Koch GmbH Oberndorf am Necker, Germany
STATUS – In production
SERVICE – Law Enforcement sales
The development of the UMP45 began in the mid-1990s as a further evolution of the JSSAP submachine guns and the MP2000. The major aspect of the UMP weapon is that it uses a straightforward blowback action with the elimination of the roller locking system found in the MP5 series. This design aspect greatly simplified the manufacture of the UMP as well as lowering the unit cost. A further point of the design is the construction of the magazine and non-stress bearing parts from glass-reinforced advanced polymers. Parts that are exposed to higher levels of stress have metal inserts to help bear the load. The final result of the design work is a weapon that Heckler and Koch gives a minimum 100,000 round service life.
