|Place of origin||West Germany|
|Used by||See Users|
|Manufacturer||Carl Walther GmbH|
|Rate of fire||550 rounds/min|
|Effective firing range|
|Feed system||32-round detachable box magazine|
There are two versions of the Walther MP: the MPK (Maschinenpistole Kurz or "short machine pistol") and the MPL (Maschinenpistole Lang or "long machine pistol"). The only difference between MPK and MPL guns is the length of the barrel. They are blowback designs firing from "L"-shaped bolts. The bolts are above the barrel, permitting a shorter receiver. The receiver, made from stamped steel, forms a ventilated cooling jacket and the prominent cocking handle is located on its left front. A selective fire switch is also on the left side of the receiver, behind the trigger.
Both guns feature side-folding buttstocks, made from thin steel tubes, and both guns feature flip-up sights. The MPL has 100 and 200 meter settings.
- Brazil: MPK variant.
- Colombia: MPK variant.
- Germany: Used by various naval units in the 1960s. Also used by various police forces.
- Mexico: Mexican Navy.
- Portugal: Portuguese Navy.
- South Africa: MPK version (SA Police standard submachine gun from 1970-1990).
- United States: Used by 1st SFOD-D during Operation Eagle Claw.
- Venezuela: MPK variant.
- Zimbabwe: MPK variant.
- Hogg, Ian (2002). Jane's Guns Recognition Guide. Jane's Information Group. ISBN 0-00-712760-X.
- Jones, Richard D. Jane's Infantry Weapons 2009/2010. Jane's Information Group; 35 edition (January 27, 2009). ISBN 978-0-7106-2869-5.
- Griswold, Terry and D.M. Giangreco. Delta: America's Elite Counterterrorist Force. Osecola, WI: MBI Publishing Company, 1992. ISBN 0-87938-615-0.