All 5.45x39mm
The 5.45 cartridge was the result of the Soviet observations in Vietnam showing that the 5.56x45mm round used in the American M16s. The 5.56x45mm round was small and light weight allowing soldiers to carry more ammunition.
The 5.45 cartridge was the result of the Soviet observations in Vietnam showing that the 5.56x45mm round used in the American M16s. The 5.56x45mm round was small and light weight allowing soldiers to carry more ammunition.
