The AK-105 is a shortened carbine version of the AK-74M rifle, which in turn was derived from the original AK-47 design and its AK-74 successor. The AK-102, AK-104, and AK-105 are very similar in design, the only difference being the caliber and corresponding magazine type. The AK-105 is chambered to fire 5.45×39mm ammunition. The AK-105 is supplementing AKS-74U carbines in Russian Army service since 2001.
Compared to the AK-74M, AK-101, and AK-103, which are full-size assault rifles of similar design, the AK-102, 104, and 105 feature shortened barrels that make them a middle ground between a full rifle and the more compact AKS-74U. However, the AK-105 also features a solid, side-folding polymer stock, unlike the shorter, skeleton-stocked AKS-74U. The AK-105 uses an adjustable notched rear tangent iron sight calibrated in 100 m (109 yd) increments from 100 to 500 m (109 to 547 yd). The front sight is a post adjustable for elevation in the field. Horizontal adjustment is done by the armory before issue. The AK-105 has a muzzle booster derived from the AKS-74U.
Protective coatings ensure excellent corrosion resistance of metal parts. Forearm, magazine, butt stock and pistol grip are made of high strength plastic. The weapon is equipped with a flash hider.
The 100-series AKs are produced by the Izhmash factories in Izhevsk, Russia.