5.45x39mm is a type of ammo used by several enemy class assault rifles in the SOCOM Series.


The 5.45mm is a shorter, Russian version of the 5.56x45mm NATO round, it trades off it's range for lethality at CQB, making it an effective type of ammo at close range. Weapons usually using this type of round will be the enemy held weapons. But players can get them during missions by swapping their main weapon.