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 a closed 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.

KGP-9
Type	Submachine gun
Place of origin	Hungary
Service history
Used by	Hungarian military and prison guard
Production history
Designed	1993-2000[citation needed]
Manufacturer	Fegyver- és Gépgyár
Produced	2000-present[citation needed]
Specifications
Mass	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)
Cartridge	9×19mm Parabellum
Action	Blowback
Rate of fire	900 rounds/min
Muzzle velocity	390 m/s (1280 ft/s)
Feed system	25-round box magazine

The standard issue barrel can be replaced by a longer one, turning the gun into a carbine with longer range than a submachine gun. The civilian variant is the KGPF-9, it is capable of semi-automatic fire only.