|For an overview of assault rifle models, see assault rifle.|
|The following is based on Fallout Tactics and is not canon.|
This gun is a comparable alternative to the AK47, offering excellent range at the cost of only slightly less damage. 5.56mm is less common than 7.62mm, but still relatively abundant. Sniper characters will find this weapon particularly useful for its burst-fire mode and long-range single-shot mode.
- Peoria, two found in lockers in the southeast and southwest part of the facility, both near a turret.
- Great Bend, carried by several of the robots.
- Cold Water, eight carried by BOS deserters
- Buena Vista, one on Paladin Lancelot's corpse.
Behind the scenes
- The United States military still uses variants of the M16 rifle, namely the M16A4, to this day.
- The image bears more resemblance to the newer M16A2 than the older M16A1 variant.