rate. Sights The flip rear sight (open type) provides two notches with range settings for firing at 75 and 150 m. It and the front blade are fixed to the slide's top surface, making aiming the weapon and correcting the follow-up shot, particularly in rapid fire mode, very difficult. Feeding The firearm feeds from two types of double-column box magazines: a short 15-round and long, 25-round magazine (the magazines are seated inside the hollow pistol grip). The magazine catch/release is at the heel of the pistol grip. After the last cartridge has been fired from the magazine, the slide is locked open on the slide catch. The pistol grip covers and folding vertical forward grip are made from a synthetic plastic material. Accessories The weapon can be deployed like a regular pistol, one-handed. Additional equipment supplied with the submachine gun includes three spare long magazines and one short magazine, a holster, sling, magazine pouch and a cleaning rod and lubricant bottle. An all-metal suppressor, design by Marian Gryszkiewic, can be used with the PM-63. Variants In 1971 a version of the PM-63 was developed in Radom for the 9×19mm Parabellum round, designated PM-70. Only several units of this version were built in a prototype pre-production batch and further production was abandoned due to lack of demand. A variant adapted for the .380 ACP (9×17mm Short) cartridge (known as the PM-73) and a silenced version were also built, but failed to gain orders. Users ===Current users=== : PM-63 captured in Sino-Vietnamese wars, locally produced as the Type 82. Former users : Used by Volkspolizei. Non-state actors – Used by Arab Liberation Front. Tamil Tigers See also MCEM 2 MP7 MP-57 MPA PM-84 Glauberyt Notes References Modern Warfare, published by Mark Dartford, Marshall Cavendish (London) 1985 External links .380 ACP submachine guns 7.62×25mm Tokarev submachine guns 9×18mm Makarov submachine guns 9mm Parabellum submachine guns Simple blowback firearms Submachine guns of Poland Weapons and ammunition introduced in 1965