Submachine Gun

"Heckler & Koch" UMP

Caliber	11.43 mm
Cartridge type	11.43 x 23 mm (.45 ACP)
Dimensions and weight
Total weight (with empty magazine)	2 200 g
Overall length	600 mm
Barrels length	200 mm
Fire characteristics
Bullets initial speed	285 m/s
Rate of fire	600 rpm
Practical rate of fire	30 - 80 rpm
Magazine capacity	25 rounds
Range of effective fire	150 m

UMP submachine gun was developed by "Heckler & Koch" company almost decade ago. UMP (Universal Machinen Pistole) is a modified version of well known MP-5 submachine gun version chambered for .45 ACP cartridges. This weapon is intended for USA police. A bit later there were developed UMP modifications cambered for 9 x 19 mm Para and 10-mm (.40 Auto).

Submachine gun automatics unlike MP-5 works on free lock's recoil principle. UMP can be completed with 2 or 3 shots burst mode hammer mechanism. This principle is one of the most simple ones, consequently is a bit more reliable than original "Heckler & Koch" automatic principle, based on partly free lock and bearings. Reloading handle acts like additional safety lock. Unautomatic safety-lock is a fire mode changer at once. This changer is placed from the both sides. UMP barrel has 6 rifles.

UMP body is made from plastic polymer. Plastic magazine has transparent sides, what allows to control ammunition storage left without extracting magazine. UMP has hardpoints for additional equipment such as tactical flashlight or laser sight. Folding buttstock also differs from standard "Heckler & Koch" ones. It folds to the right sight. Buttstock is additionally fitted with rubber compensator, placed on it's back.

Submachine gun has opened sector sight with adjustable sighting range.