MP 18

MP 18
MP 18
	Bergmann MP 18
Type	Submachine gun
Place of origin	German Empire
Service history
In service	1918–1945 (Germany)
Used by	See Users
Wars	World War I; Russian Civil War; Warlord Era; German Revolution; Greater Poland uprising (1918–1919); Irish Civil War; Rif War; 1924 Estonian coup d'état attempt; Chaco War; Spanish Civil War; Second Sino-Japanese War; Chinese Civil War; German-Czechoslovak War; World War II; Indonesian National Revolution; Iranian crisis of 1946; Ifni War;
Production history
Designer	Hugo Schmeisser
Designed	1917
Manufacturer	Bergmann Waffenfabrik; C.G. Haenel (MP 28/II); Lindelof Konetehdas (Lindelof Submachinegun); Pieper (Mi 34); Qingdao Iron Works; SIG (SIG M1920);
Produced	1918–1920s; 1928 – early 1940s (MP 28/II)
No. built	Fewer than 30,000
Specifications
Mass	4.18 kg (9.2 lb); 4.0 kg (8.8 lb) (MP 28/II)
Length	832 mm (32.8 in)
Barrel length	200 mm (7.9 in)
Cartridge	9×19mm Parabellum; 7.63×25mm Mauser (export); 7.65×21mm Parabellum (export); 9x23mm Largo (export) (MP 28/II); 9x25mm Mauser (export) (MP 28/II); .45 ACP (export) (MP 28/II);
Action	Open-bolt blowback
Rate of fire	approx. 350–500 rounds/min (MP 18); 550–600 rounds/min (MP 28/II)
Muzzle velocity	380 m/s (1,247 ft/s)
Feed system	10-round Mauser pattern detachable box magazine (MP 18,III and MP 18,IV prototypes); 20-round detachable box magazine (prototypes, post WW1, MP 28/II); 30-round detachable box magazine (post WW1); 32-round detachable box magazine (MP 28/II); 32-round detachable TM 08 drum magazine (WW1); 36-round detachable box magazine (Spanish Avispero copy); 40-round Mauser pattern detachable box magazine (MP 18,III and MP 18,IV prototypes, SIG 1920); 50-round Mauser pattern detachable box magazine (MP 18,III and MP 18,IV prototypes, SIG 1920); 50-round magazine from Lanchester (MP 28/II);
Sights	V-notch and front post

The MP 18 (Maschinen-Pistole 18) is a German submachine gun designed and manufactured by Bergmann Waffenfabrik. Introduced into service in mid-1918 by the German Army during World War I, the MP 18 was intended for use as a short-range weapon for trench warfare that would provide individual soldiers with increased firepower over a pistol.

Although MP 18 production ended after World War I, it was highly influential on subsequent small arms design; it formed the basis of most submachine guns manufactured during the first half of the 20th century.