Wieger STG 940 assault rifle family was devised in east Germany (DDR) in around 1985, specifically for export purposes. Based on the famous Kalashnikov AK-74 rifle, produced in East Germany under Soviet license since around 1981, the new rifle family was adapted to 5.56×45 NATO ammunition. It was assembled at the VEB Gerate-und Sonderwerkzeugbau Wiesa factory from parts, produced in Suhl, hence its family name WIEGER (WIESA GERMANY).
First prototypes were tested in 1985, and rifles were ready for manufacture in 1988, with four varisnts including fixed-stock STG 941 rifle, folding-stock versions STG 942 with standard barrel and STG-943 withs hort barrel, and the heavy-barreled STG 944 squad automatic weapon. Of these four, only the first two versions were ever made in any significant numbers. It appears that DDR has at least two initial contracts on hand for WEIGER rifles, from Peru and from India, but then in 1989 Berlin wall fell, and East Germany merged with West Germany under western government. The latter quickly killed most arms manufacture programs conducted by the East, including the STG 940 rifle. It appears that manufacture of the Wieger STG 940 rifles has ceased in 1990, and most of the rifles made were scrapped by 1992.
Later on, during early 2000s, some American companies such as Inter Ordnance (IO Inc) began to manufacture semi-automatic copies of the STG 940 in .223 and 7.62×39 using imported parts, and it seems that IO Inc still makes several semi-automatic AK-type rifles with STG-940 styled stocks and front sights.
The Wieger STG 941 assault rifle is a gas operated, rotary bolt locked weapon based on the Kalashnikov AK-74. It shares same basic stamped steel receiver, controls and overall layout, with several distinctive features, such as indigenous shoulder stocks made from polymer, with rubber inserts for length of pull adjustments, polymer forends, M6A2-style birdcage flash suppressors and front sight bases moved to the gas block. The STG 942 featured side-folding East German styled shoulder stock made from thick steel wire. All rifles use specially made 30-round steel magazines.