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Icon vaulttec.png Ammunition Overviews Icon vaulttec.png
.223 FMJ  •  .22LR Round  •  .303  •  .308 Round  •  .32 Caliber Round  •  .357 Magnum Round  •  .44 Magnum  •  .45-70  •  .45-70 Gov't  •  .45 Caliber  •  .50 Caliber  •  .50 Caliber Ball  •  10mm  •  12.7mm Round  •  14mm  •  2mm EC  •  30.06  •  4.7mm Caseless  •  40mm Grenade  •  5.56mm Round  •  5mm Round  •  7.62mm  •  9mm  •  Acid  •  Alien Blaster Round  •  Alien Power Cell  •  Alien Power Module  •  BB  •  Cannonball  •  Crossbow Bolt  •  Cryo Cell  •  Dart  •  Depleted Uranium Round  •  Electron Charge Pack  •  Energy Cell  •  Flamethrower Fuel  •  Fusion Core  •  Gamma Round  •  HN Needler Cartridge  •  Harpoon  •  Meat Cannon  •  Mesmetron Power Cell  •  Microfusion Breeder  •  Microfusion Cell  •  Mini Nuke  •  Missile  •  Modified Bowling Ball  •  Nails  •  Paddle Ball String  •  Plasma Cartridge  •  Plasma Core  •  Railway Spike  •  Rocket  •  Shotgun Shell  •  Speargun Bolt  •  Syringer Ammo  •  Tank Shell


5.56mm Round is a type of ammunition found in the Fallout Series.

Background

An average round used in late 20th century by various military rifles including the M-16.[Pub 1][Pub 2] It is described as lightweight and accurate, remaining in production until the Great War.[Pub 3]

List

Image Name Game
| Fo4 5.56mm round.png 5.56 Round | | Fallout 76

| FoT 556mm ammo.png 5.56mm | | Fallout Tactics

| FO3 Ammo 5.56mm Round.webp 5.56mm Round | | Fallout 3

| Fo4 5.56mm round.png 5.56mm Round | | Fallout 4

| FO3 Ammo 5.56mm Round.webp 5.56mm Round | | Fallout: New Vegas

References

Publications
  1. Vault Dweller's Survival Guide p. 5-17: "Rifle caliber ammunition. The FMJ stands for Full-Metal Jacket, which describes the bullet that is used in the round of ammo. A FMJ bullet is very tough, and has pretty good penetration without sacrificing good expansion. In other words, it‘s an average round."
  2. Fallout Official Survival Guide p. 119: ".223 Full Metal Jacket (FMJ): This is the same ammo used in the late 20th century by various military rifles, including the M-16. A good, basic, hard-hitting round."
  3. Fallout: The Roleplaying Game Core Rulebook p. 93: "A lightweight, Accurate rifle round normally used in assault rifles. Developed centuries ago for the U.S. Army’s standard rifle of the era, 5.56mm rounds remained in production and use right up until the end of the Great War, and if you know where to look they’re easy enough to find."