The Vault - Fallout Wiki

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The Vault - Fallout Wiki
The Vault - Fallout Wiki
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For an overview of 5mm ammunition throughout the Fallout series, see 5mm round.
5mm Round
Editor IDAmmo5mm
Base ID0001f66c

5mm round is an ammunition type in Fallout 4.


The following section is transcluded from 5mm round. To modify, please edit the source page.

A high velocity round designed for assault rifles, the intermediate 5mm M134 cartridge[1] has been replaced by the more powerful 5.56mm round in assault rifles.[2] However, it found a new life as linked, belt fed ammunition for man-portable miniguns on the battlefield, specifically the M134 cartridge and 7.62x51 millimeter rounds.[3] It has also been retained as the ammunition of choice for paratrooper assault carbines, due to its light weight and portability.[4]


The following section is transcluded from 5mm round. To modify, please edit the source page.

The standard 5mm M134 round is typically packaged in linked belts, designed for use in miniguns. The full metal jacket round offers excellent performance against soft targets, with or without body armor.

Weapons using this ammunition




  • 5mm rounds can sometimes be bought from weapon dealers or inside ammunition boxes.
  • They can also be manufactured an ammunition plant.


  1. Ammunition package in Fallout 3 and Fallout: New Vegas states the following: "5mm LINKED M134
    1 TRACER M17 4 API M8
    FUNC LOT POD80h003L041"
  2. PRO ITEM.MSG: "{2300}{}{Assault Rifle}
    {2301}{}{An AK-112 5mm Assault Rifle. An old military model, out of use around the time of the war. Can fire single-shot or burst, using the high velocity 5mm rounds. Min ST: 5.}"
  3. Ammunition package in Fallout 4 and Fallout 76 states the following: "Cartridges
    "5"MM, Mil
    7.62 x 51 MM ACT
    (ST. A.CL.) 13S455
  4. Weapon appearance.