Adapted from the battlefields, US Forces have begun improving this proven Trijicon ACOG scope by adding a small red dot sight on top for close encounter missions. Trijicon has now created a similar model for the public, the TA31-C-100550. The main Trijicon scope provides an illuminated reticle using fiber optics and tritium for bright aiming point in any light condition. The ranging reticle allows for bullet drop compensation out to 600 meters without any manual adjustments. A Trijicon RMR Type 2 sits on top with a 3.25 MOA aiming dot. Includes 3.25 MOA RMR Type 2, thumbscrew flattop adapter, LENSPEN, lanyard assembly for adjuster caps, Trijicon logo sticker, ACOG manual and warranty card. Length 5.80" Proofs Fog/Shock/Water Resistant Series Combo Weight 15.10 oz Reticle Illuminated Red Crosshair .223 BDC Objective 32mm Eye Relief 1.50" Coating Type Water Resistant, Fog Resistant, Shock Resistant Field Of View 36.80 ft @ 100 yds Magnification 4x Optic Coating Multi-Coated Parallax Adjustment Dual Illuminated Red Crosshair 223 Ballistic