Goryunov Type Machine Guns made by Hungary

KGK Machine Gun
7.62mm KGK Géppuska

Made by Fémárú Fegyver és Gépgyár, Budapest, Hungary
Gas operated, Automatic fire
Caliber: 7.62x54R
Muzzle velocity 865 m/s [2845 ft/s]
1300mm [51.2"] overall length
790mm [31.1"] barrel length with flash hider
4-groove rifling, right hand, 240mm/twist
Gun's weight: 13.4kg [29.5 lbs]
Stand's weight: 9.1kg
125 or 250-round metallic link belt
125-round ammo box 5.5kg
250-round ammo box 10.25kg
Theoretical Cyclic rate: 650 rpm

This machine gun is a heavily modified version of the Soviet Goryunov SGM machine gun described below, under the '7.62 SGM Goryunov' heading.
These modifications/improvements were made by Hungarian engineers at Fémárú Fegyver és Gépgyár, Budapest, believably under the leadership of József Kucher.
A new, easily adjustable height lightweight tripod replaced the original heavy tripod. A new flesh hider/muzzle break was installed. A pistol grip, a wood buttstock and a carrying handle was added, together with a foldable bipod to faciliate the weapon's use as a light machine gun, if necessary.
The barrel surface was ribbed for weight reduction and better cooling. The barrel holder wedge was replaced with a pin to provide faster barrel replacement.
A version of this machine gun, called KGKT, was used in the Hungarian PSZH armored vehicles as tower machine gun.

Photos courtesy of Petrohai Ferenc
For a larger image click on the photo on the left

7.62mm SGM Goryunov Heavy Machine Gun
7.62mm SGM Nehéz Géppuska

Copy of Soviet gun, made by Fémárú Fegyver és Gépgyár, Budapest, Hungary
Caliber: 7.62x54R. Muzzle velocity 2870 feet/sec
Gas operated, Automatic fire only, 250-round metallic link belt
1120mm [44.1"] overall, 720mm [28.3"] barrel, 13.5kg [29.8 lbs]
Cyclic rate: 600-700 rpm

The SGM (Stankovy [mounted or heavy] Modernized Goryunov) machine gun came with either a wheeled mount which could be fitted with a shield or a light tripod mount.

This machine gun was the basis for the KGK Machine Gun shown above

Other Heavy Machine Guns made by Hungary 1948-90

ZPU2 Heavy Dual Machine Gun

ZPU4 Heavy Quad Machine Gun