5mm round (Fallout)

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For an overview of 5mm ammunition types in the Fallout series of games, see 5mm round.

5mm round is a type of ammunition in Fallout and Fallout 2.


Narrow, long cartridges of bottleneck-cased rifle ammunition, which are found in large ammo storage cans. Weapons which use this type of ammunition are typically automatic firearms which fire large amounts of ammo.


There are two variants of 5mm ammunition:

  • 5mm AP (A brick of small caliber ammunition. 5mm armor piercing.)
  • 5mm JHP (A brick of small, lightweight ammunition. Caliber: 5mm, jacketed hollow-point.)

Weapons using this ammunitionEdit


In Fallout, ammunition modifiers are not applied properly which makes the 5mm equal to any other kind of ammunition and both JHP and AP versions functionally identical.

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