Ceskoslovenska Zbrojovka (Uhersky Brod)

The Sa vz. 25 is a variant of the Czechoslovak vz. 23 submachine gun featuring a folding metal stock instead of the fixed wooden stock on the vz. 23. It was designed for use by paratroopers, vehicle crews, and special forces who needed a more compact weapon. The vz. 25 shares the same telescoping bolt action and receiver as the vz. 23. Its folding stock folds to the side, reducing overall length for storage and transport. The weapon is chambered in 9x19mm Parabellum and feeds from a magazine inserted in the pistol grip.

The Sa vz. 23 is a Czechoslovak submachine gun developed shortly after World War II. It was one of the first submachine guns to feature a telescoping bolt design that wraps around the barrel, allowing for a compact weapon with a longer barrel. The vz. 23 was designed by Vaclav Holek and shares its basic operating system with the later Sa vz. 25 and vz. 26. It features a stamped steel receiver, a folding stock, and a distinctive pistol grip with an integrated magazine housing. The weapon is chambered in 9x19mm Parabellum.