CS/LS5

The CS/LS5 is a submachine gun developed by the Jianshe Industries (Group) Corporation of Chongqing. The CS/LS5 design is chambered for indigenous armour-piercing 9×19mm DAP-92 ammunition, but can also use the popular 9×19mm Parabellum round used internationally by armed forces and law enforcement for most pistols and sub machine guns, as well as domestically developed less lethal rubber ammunition.
Design details.
The CS/LS5 has a short-stroke gas piston system which operates in closed bolt. It comes with a 21.6 cm barrel chambered in 9×19mm Parabellum cartridge, with rear and front iron sights, accessory steel Picatinny rail mounts and a folding stock. It features a left-mounted selector switch for fully automatic (law enforcement/military models) and semi-automatic fire, with the charging handle at the upper front left of the weapon, based on the MP5 design. 
The standard weapon weighs overall with loaded magazine.