Development of a new submachine gun chambered for the 9x21 mm cartridge (also used by the SR-1 "Gyurza" pistol) was launched in mid-1990s on the order of the FSB. A weapon was presented in 1999, developed in Klimovsk TsNIITochMash which received the designation of SR-2 (Spetsialnaya Razarbotka - 2, Special Development - 2) and nicknamed "Veresk" ("Heather", a plant).
"Veresk" and its round were created as a compact weapon capable of engaging enemies wearing Russian class-II body armor (able to stop ordinary pistol bullets, such as 9x19 Para and 7.62x25 Tokarev), and soft-skinned vehicles, at distances up to 200 metres.

Type	Submachine gun
Place of origin	Russia

Designed	1999
Manufacturer	TsNIITochMash