Available in Classic, Black, Camo and Tiger. Camo and Tiger can only be won in the mystery box. The silencer versions are also available in the just mentioned colors.
Together with the AK-47, the M4A1 was introduced into UberStrike in post-4.3.2 times, and was modelled after the real gun itself, the M4 Carbine.
The M4A1 has subtle flashes of light being produced from the bullet-ejection port (the place where empty ammo catridges are ejected from the gun after each shot). This was nerfed slightly in 4.4, but the flashes of light was still there. It is unknown whether the silencer makes a difference to the intensity of the light.
M4A1 4U 4EVAThere was a Valentines Day version of the M4 that is now only available in the bundles section. Say hello to the sister of the famed M4A1, the M4A1 4U 4EVA. This version of the M4 is pink, has hearts and comes wth a silencer. This is the only version of the M4 to NOT include a non silenced version.
JULY4A1In celebration of July 4th America's birthday UberStrike has realeased THE first ever weapon to have an American paintjob.
The JULY4A1 is an M4A1 colored with the flag of the greatest nation in History The United States of America. This weapon has the same ammo as the Black M4A1. The M4A1 orginated from America, made by Americans for the US Military.
The USA Flag mask was also featured during the sale.
This weapon is only available for Credits it use to be available for only points with no permant purchase but obviously that was changed.