The KA-174 is a Soviet tank assault rifle.
Nikolay Makarov designed a curved barrel for an AK-styled rifle, with K. T. Kurenkov designing a ball-shaped mount for the weapon. The curved-barrel assault rifle was meant to protect people in the "dead zone" of tanks which cannot normally be engaged by normal arms fire, and to resolve such problems, the KA-174 was mounted on the turret hatch. However, in spite of the weapon being somewhat innovative, tank crews were not so optimistic about the weapon's design despite the weapon operating using an AK's receiver. Due to this, work on the KA-174 was halted indefinitely and curved-barrel weapons were not made again by the Russians.