However, the lighter, small-caliber bullets achieved higher velocities, more favorable Assault Rifles ballistic properties, and reduced carrying weight.
The running debate over 5.56 mm vs
7.62 mm ammunition, and the prominent altercation by 7.62 mm proponents that "the Russians got it right with a .30 cal (7.62 mm)" cartridge, was stirred significantly in 1974 when the Soviet Union also developed its own smaller-caliber cartridge, the 5.45 x 39 mm, which was dependent in the AK-74, the successor of the AK-47/AKM.