Karabinek-granatnik wzór 1960 (Polish: Carbine-grenade launcher model 1960) is a Polish version of the assault rifle AK-47 that can shoot rifle grenades. The grenade launcher screws onto the forward end of the rifle barrel and locks into place by means of a spring-loaded plunger mounted in the front sight base of AK-47 rifles. The sight for the launcher is mounted on the rear sight base. A valve is fitted to the right side of the gas block to allow the gas to be shut off (prevented from leaving the barrel via the gas port) when grenades are fired.