Type: Assault rifle Place of origin: Soviet Union Service history: In service 1949—Pres. Used by: Soviet Union, many othersProduction history: Designer Mikhail Kalashnikov Designed 1947Number built: Over 100 million[1] Variants: AK-47, AKS, AKM, AKMS, RPK, AK-74, AK-101, AK-102, AK-103, AK-107, AK-108(See table below for national-production variants) Specifications Weight 4.3 kg (9.5 lb) Length 870 mm (34¼ in) Barrel length 415 mm (16.3 in)--------------------------------------------------------- ----------------------- Cartridge 7.62 × 39 mmAction Gas-operated, rotating bolt Rate of fire 600 rounds/min Muzzle velocity 710 m/s (~2,330 ft/s) Effective range 300 m (330 yd) Feed system 30-round detachable box; compatible w/ RPK 40-round box, 75-round drum magazine. Sights Adjustable iron sights, optional mount required for optical sights