ACW-R

The ACR or Adaptive Combat Rifle (previously known as the Magpul Masada before Bushmaster taking over production) is an assault rifle developed initially and proposed for the future replacement of the venerable M16 rifle. The ACR uses the standard 5.56x45mm NATO round but future designs can possibly use the 6.8mm Remington SPC like other conventional Assault Rifles it uses gas pison and rotating bolt.

Battlefield 3
The ACW-R is briefly seen in the Close Quarters - Ziba Tower DLC Trailer.