|Place of origin||Hungary|
|Used by||Hungarian military and prison guard|
|Manufacturer||Fegyver- és Gépgyár|
|Weight||2.75 kg, (6 lb 1oz)|
|Length||355 mm butt folded (13.97 in), 615 mm butt extended (24.21 in)|
|Barrel length||190 mm (7.48 in)|
|Rate of fire||900 rounds/min|
|Muzzle velocity||390 m/s (1280 ft/s)|
|Feed system||25-round box magazine|
The KGP-9 is a Hungarian submachine gun used by Hungary's military forces and prison guards. It operates using a basic blowback mechanism, and fires the very popular 9mm Parabellum cartridge from an open bolt. It is assembled from pressed steel, reinforced with castings. The KGP-9 fires with a hammer mechanism and with a floating firing pin contained in the bolt, and is capable of a firing rate of 900 rounds/min.
An interesting feature of this gun is that the standard issue barrel can be replaced by a longer one, turning the gun into a carbine with longer range than a submachine gun. A civilian variant exists, capable of semi-automatic fire only.
- Military Small Arms of the 20th Century Ian Hogg, John Weeks
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