Trijicon TA11EG ACOG 3.5x 35mm 28.9ft@100yds Tube Blk Dual Illum Grn ChevronThe ACOG’s are internally-adjustable, compact telescopic sights withtritium illuminated reticle patterns for use in low light or at night. TheACOG’s combine traditional, precise distance marksmanship with close-inaiming speed. Every feature of its design was chosen for a single purpose:to provide increased hit potential in all lighting conditions. The model is 3.5×35.