The AKS-74U is an
assault rifle designed in the
Soviet Union that was in production from the early 1980s until circa 1991. The AKS-74U ("U" for "Укороченный"/"Ukorochennyj" [shortened]) was developed in the late 1970s from the
AKS-74, a shortened variant of the AK-74. The earliest known models were produced and dated by the Izmash and
Tula Arsenals beginning in 1981. The AKS-74U is the size of, and has the effective range of a
submachine gun. Only a few parts are interchangeable with the AK74, although it does utilize the same
5.45 mm ammunition. A notable distinguishing feature is the conical gas expansion chamber developed to control
recoil and
muzzle flash as well as to facilitate cycling of the weapon given the shorter barrel.
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