ACR

The ACR is an assault rifle that appears in some fanon maps.

A Darker Shade of White
The ACR appears in A Darker Shade of White as a Mystery Box weapon.

Effectivenss
The ACR is a very good assault rifle to use as it has great power and an effective rate of fire. It also has a good ammo count and clip size.

4CE
When Pack-a-Punched it becomes the 4CE. It gets a bit of a damage boost and also an under-barrel grenade launcher. Also, it gets more ammo and a bigger clip.

AmCoRi
When Super Punched it becomes the AmCoRi. It gains damage bullet and grenade damage, a larger grenade radius, more bullets and grenades and yet again a larger clip.

Trivia

 * AmCoRi is short for Amazing Combat Rifle.