Trijicon is the proud manufacturer of the Army’s M150 Rifle Combat Optic (RCO) also known as the Advanced Combat Optical Gunsight (ACOG). Our line of aiming systems include the ACOG, Variable Combat Optical Gunsight (VCOG), Machine Gun Optics (MGO’s), Reflex Sights, Ruggedized Miniature Reflex (RMR) sights, Thermal Sights, and Miniature Rifle Optic (MRO).