IMR

The IMR (Integrated Munitions Rifle) is a weapon from the Call of Duty Universe.

The IMR uses 3D Printing Technology, and is able to "print" bullets, effectively reducing reload time.

Users of this weapon load in a canister of liquid matter and rack it by pulling back on the bolt. Once securely housed, the internal computer begins printing new rounds on the spot (basically meaning that the ammo count recharges over time, but the mag ammo still stays at 30).

Future Warfare
The IMR will be used by Atlas, The B Team, and Slade's Ensemble.