7,62mm kbkg wz. 60
7.62mm Carbine-Grenade Launcher Model 60, also known as AK GN (7,62mm karabinek-granatnik wz. 60) is a Polish assault rifle designed by L. Chodkiewicz and S. Dwojak. Gun design is based on Soviet AK (AK-47) assault rifle. Carbine-Grenade Launcher Mod. 60 was designed in the late 50-ties. Gun was accepted by Polish Armed Forces in the early 60-ties. The weapon differs from AK rifle, and can fire rifle grenades. Introduction of Mod. 60 was not intended as replacement of Soviet AK, but as auxilary weapon system increasing firepower at team level.
7.62mm Carbine-Grenade Launcher Mod. 60 is a gas operated weapon with a long stroke gas piston. Gun is equipped with 2 position gas regulator. "C" position is for firing with standard ball ammunition. "Z" position is for firing of the rifle grenades. The weapon has a standard AK style rotating bolt with two lugs without a bolt catch. The gun has a machined receiver, same as Type III receiver of AK-47. The ejection port and charging handle are on the right side of the receiver. Trigger mechanism with internal hammer can fire in single, or full auto mode. A 3-position, AK style fire selector switch is located on the right side of the receiver. Its upper position is for "safe". Fire safety locks the trigger, the slide, and the bolt. Intermediate position of the selector lever is for automatic fire. Down position is for a single shot mode. The gun is chambered for Soviet 7,62x39mm cartridge. For rifle grenade firing, the shooter must use UNM wz. 43/60 special blank cartridge (Universal Propelling Cartridge Model 60 , Uniwersaln Nabój Miotający wz. 60). Weapon is fed from 30-round double column curved magazine from AK and AKM assault rifles. For grenade launching cartridge UNM wz. 43/60 a short, 10-round double column magazine was developed. This magazine theoretically does not accept standard ball ammunition, but it was found in practice, that one can load 2 regular ball cartridges in it. Gun also accepts 40-round curved magazine, and 75-round drum magazine from RPK light machine gun. The rifle has a pistol grip, handguard, upper handguard, and a stock with rubber butt-plate made out of wood. There was a version with a folding steel stock, but it was promptly removed from service due to its insufficent strength for grenade launching. In the early 70-ties a version with removable wooden stock was developed. That variant was designated as "kbkg wz. 60/72". The Carbine-Grenade Launcher Mod. 60 has a modified receiver cover with latch, because standard receiver cover was not strong enough for rifle grenade firing. The chrome plated barrel is 415mm long with 240mm right hand twist rate. The gun has open rear sight graduated from 100 to 800 meters at 100 meter intervals, and a folding sight for rifle grenade launching. Guns manufactured in the 70-ties were equipped with Universal Sight Model 70 (celownik uniwersalny wz. 70).
7,62mm kbkg wz. 60 design
Rifle grenades
7.62mm Carbine-Grenade Launcher Mod. 60 can fire Polish F-1N60, KGN, PNG-60, and DGN rifle grenades. Shooter must launch rifle grenades using UNM wz. 43/60 special blank cartridges. Attempt to use a standard ball cartridge for that purpose, would probably cause explosion of the rifle grenade still attached to the muzzle of the barrel.


F-1N60 is a fragmentation rifle grenade based on Soviet F-1 fragmentation hand grenade. F-1N60 warhead contains 60 gramms of TNT and DC-1 inertia detonator. Grenade steel exterior is ribbed to faciliate fragmentation. F-1N60 weights 780 gramms, is launched at 50 meter per second muzzle velocity, and has 200 meters maximum range. F-1N60 grenade was replaced by KGN rifle grenade.


KGN is a fragmentation rifle grenade. KGN warhead contains 65 gramms of TNT and RDX explosives with DC-1 inertia detonator. KGN weights 460 gramms, is launched at 65 meters per second muzzle velocity, and has 340 meters maximum range. Its lethality radius is 7 meters.


PNG-60 is an anti-tank rifle grenade with HEAT warhead. PNG-60 weights 580gramms, has 60 meters per second muzzle velocity, 100 meters maximum range, and 200 millimeters RHA penetration.


DGN is a smoke rifle grenade. It weights 630 gramm, has 65 meters per second muzzle velocity, 200 meters maximum range, and 55 seconds smoke emission time.


CGN is a training rifle grenade with its warhead without explosive material. CGN weights 260 gramm, has 90 meters per second muzzle velocity, and 600 meters maximum range.
7,62mm kbkg wz. 60 summary
7.62mm Carbine-Grenade Launcher Mod. 60 is a good AK variation. This weapon was issued to Polish Army, but it was also used by Vietcong during Vietnam War, and Palestinians during fights with Israeli army. One kbkg wz. 60 specimen was returned to Poland from Vietnam with the information table attached. According to the table a Vietcong soldier had destroyed with this gun several US tanks, but probably those were rather US armored personnel carriers. Carbine-Grenade Launcher Mod. 60 was replaced by Polish designed and built Pallad Mod. 74 underbarrel grenade launcher.
version
kbkg wz. 60
cartridge
7.62x39mm
muzzle velocity
715m/s
muzzle energy
1990J
barrel lenght
415mm
lenght
1075mm
weight
4.4kg without magazine

4.73kg with full load 10 round magazine

5kg with full load 30 round magazine
magazine
double column 10 round magazine for
special blank cartridges or 30 round AK
magazine for standard ammunition
fire selector
single and full auto
rate of fire
600 rpm
rifle granade
F-1N60
KGN
PNG-60
DGN
CGN
warhead
fragmentation
fragmentation
HEAT
smoke
training
explosive material
60g TNT
65g TNT and RDX
230g TNT
without
without
detonator
DC-1 inertia
detonator
DC-1 inertia
detonator
DC-1 inertia
detonator
without
without
muzzle velocity
50m/s
65m/s
60m/s
54m/s
90m/s
maximum range
200m
340m
100m
200m
600m
weight
780g
460g
580g
630g
260g
caliber
60mm
60mm
68mm
54mm
30mm
lenght
260mm
240mm
400mm
390mm
265mm
Kbkg wz. 60 firing method (excerpt from manual)
Kbkg wz. 60 firing method (excerpt from manual)
Kbkg wz. 60 Rifle preperation for grenade launching (excerpt from manual)