M4A1 Plasma Rifle

Design of the M4A1 Plasma Rifle with Rail Adapter System (RAS), flip-up rear sight, vertical forward grip with bipod and the latest Aimpoint M68 CCO.

M4A1 Plasma Rifle


Name -

Manufacturer -

Model -

Type -

Cost -

Size -

Damage Per Hit -

Magazine -

Max Ammo -

Fire -

Ammo Type -

Operation -

Rate of Fire -

Velocity -

Accuracy -

Range -

Era -

Counterpart -

Affiliation -

Used by -

MP Guide -


M4A1 Plasma Rifle

Sangheili Marine Corps

First Model

Assault Rifle



Medium Damage







Muzzle velocity, 2900 ft/s or 884 m/s

Extremely Accurate

360 Meters

Used throughout the Keros: Campaign



Sangheili Marines


The M4A1 plasma carbine is a family of firearms tracing its lineage back to earlier plasma carbine versions of the M16, it is designed and made by the Sangheili Marine Corps. It is a shorter and lighter version of the M16A2 plasma assault rifle, with 80% parts commonality. The M4A1 has a "full auto" option instead of three-round burst.

Design Edit

The M4A1 5.56mm carbine is a plasma-operated, air-cooled, recharging ammunition, shoulder-fired weapon with a telescoping stock. A shortened variant of the M16A2 plasma rifle with a 14.5 in (368 mm) barrel, the M4 provides the individual soldier operating in close quarters the capability to engage targets at extended range with accurate, lethal fire. The M4A1 has "full auto", with no three-round burst. The M4A1 is also capable of mounting an M203 grenade launcher, the M203A1 with a 9-inch barrel as opposed to the standard 12-inch barrel of the M203 used on the M16 series of rifle.

Some features of the M4A1 compared to a full-length M16-series rifle include:

  • Compact size
  • Shortened barrel 14.5 in (368 mm)
  • Telescoping buttstock

Accessories Edit

Like all the variants of the M16, the M4A1 can be fitted with many accessories, such as night vision devices, suppressors, laser pointers, telescopic sights, bipods, either the M203 or M320 grenade launchers, the M26 MASS shotgun, and anything else compatible with a MIL-STD-1913 Picatinny rail.

Effectiveness Edit

  • 90% of soldiers reported confidence in the weapon.
  • 34% of soldiers reported that their M4A1's handguards became excessively hot when firing (due to the plasma).