5.56mm

5.56 millimeter known as 5.56mm (Green) in the game, is a type of ammunition currently used by four weapons. The power of 5.56mm is on par with 7.62mm (Blue) ammunition. It is used for the more powerful guns. All the guns using 5.56mm ammo are quite good and are usually used late game.



Trivia

 * The 5.56mm projectiles are green-colored.
 * The ammo is based off of the 5.56 × 45mm NATO cartridge, as all 5.56mm weapons in the game use that cartridge in real life.
 * The 5.56mm casing is shown with a rim, even though the real-life cartridge is rimless.
 * No new 5.56 weapons have been added since the February 20th, 2017 update that released all four of the current weapons in this caliber. Due to this, we can conclude that 5.56 might be an exclusive ammo type to the four guns, however, it is still likely that more 5.56 weapons will be added due to their popularity with modern military forces.