The AO-64 was a general-purpose machine gun chambered in the 6×49mm round.
This gas-operated machine gun was designed as a potential replacement general purpose machine gun to replace what was considered the rather dated 7.62×54mmR general purpose machine gun, the PK machine gun. The AO-64 never advanced past prototype stages. It only had provisions for full-auto fire.
- AO-64M Gashetka
Supposedly modernized variant with no noticeable differences.