Trijicon ACOG 4x32 Scope w/Dual Illumination Green ACSS Reticle TA31-G-ACSS Fixed Magnification - 4X 5.56 NATO, .308 Winchester, and 5.45x39 7n6 Compatible Dual Illuminated Reticle - ACSS 5.56 Green Second Focal Plane Waterproof / Shock Resistant