5.56mm round

The 5.56mm round is a type of ammunition in Fallout 3, Fallout: New Vegas, Fallout 4, Fallout 76, and Fallout Tactics.

Background
Originally developed for the M16 service rifle of the United States Army. 

5.56mm round


Ammunition. 5.56mm caliber.

5.56mm, armor piercing


Ammunition. 5.56mm caliber, armor piercing.

5.56mm, hollow point


Ammunition. 5.56mm caliber, hollow point.

5.56mm, surplus


Ammunition. 5.56mm caliber, surplus.

5.56mm, match


New ammunition added with the add-on, Gun Runners' Arsenal.