The M2 Caseless Individual Combat Weapon and M12 Caseless Carbine were adpoted by the Department of Defense as the standard combat arms in 2032, due to almost two decades of shortcomings from the M29 OICW. The M2 CICW is the standard infantry weapon and incorporates both a 5x36mm selectable-fire Kinetic Energy system and a 16mm semi-automatic idirect fire (grenade)/shotgun system--both systems fire caseless ammunition. The M12 is simply the Kinetic Energy part of the M2 and was designed for instances where the added 16mm system would rarely or never be employed and could be a burden to the soldier carrying it--e.g. vehicle and aircraft crews and pilots, security guards, military police, ect. Both weapons can be fitted with the same optics, though the SRO Optic does not have the Mil-Dot Crosshair or Indirect fire reticle and thus cannot be used--at least effectively--with Grenades. The sight can, however, be used adequately with 16mm buckshot and other high-powered, kinetic energy rounds. The M2 and the M12 can be fitted with a sound supressor and vertical foregrip, and are available in black, woodland, desert, and winter color schemes.