Adds the Aimpoint Comp M4 to the game (not to be confused with Pawcios Aimpoint Comp M4S, similar model optic just with a low battery compartment)

The CompM4 is currently used and trusted by top tier end users throughout the free world. The U.S. Army has chosen a member of the Aimpoint CompM4 series of sights as their M68CCO (Close Combat Optic) for over two decades. The CompM4 is powered by a single AA battery for over 80,000 hours (8 years) of continuous use and over 500,000 hours in the night vision settings.