.223 FMJ

.223 FMJ (Full Metal Jacket) is the only type of .223 caliber ammunition in Fallout and Fallout 2.

Arguably one of the most common types of ammunition used in the modern world, the .223 rifle round is a very effective high-velocity, low-weight round. Introduced in 1950 by Remington Arms as a varmint cartridge, the round was adopted by the Armalite Corporation as the ammunition of choice for the M-16, a bold move away from the high-caliber military firearms of the day.

The .223, more commonly referred to by its military metric label of 5.56mm, has found use in battle rifles, hunting rifles, and squad automatic weapons since 1957. The 5.56mm is a standardized rifle ammunition used by member nations of NATO and has some distinct differences with the .223: namely a thicker casing and higher chamber pressure.

Weapons Using .223 Ammunition

 * .223 Pistol
 * Hunting Rifle
 * Scoped Hunting Rifle
 * Sniper Rifle
 * Light Support Weapon
 * Bozar

5,56mm FMJ