The TA648MGO-M240 6x48 ACOG is a Machine Gun Optic (MGO) designed specifically for the M240 weapon system. The MGO provides the shooter enhanced target identification and increased hit probability out to 1200 meters utilizing the Bullet Drop Compensator. With a built in 1913 Picatinny rail on top, the MGO allows the end user to incorporate the Trijicon 1x42 Reflex (RX30/RX34) sight for convoy operations and/or Close Combat situations or any other target designators. The TA648MGO-M240 incorporates dual-illumination technology using a combination of fiber optics and self-luminous tritium. This allows the close in reflexive fire aiming point to be illuminated without the use of batteries. The tritium illuminates the aiming point in total darkness, and the fiber-optic self-adjusts reticle brightness during daylight according to ambient light conditions. This allows the operator to keep both eyes open while engaging close in targets and maintaining maximum situational awareness.