Trijicon ACOG 4 x 32 LED Scope Battery Illuminated Red Crosshair Rifle Scope with TA51 Mount RMR RM06 Combo Magnification: 4x Objective Size: 32mm Bullet drop compensator Trijicon 4x32 Battery ACOG and RMR RM06 Combo delivers robust engineering and enhanced user control Powered by a single AA battery The electronics offer an outstanding level of reliability with a straightforward brightness dial The body has been optimized by moving the RMR mount forward to maximize its performance in conjunction with the ACOG Fully night vision device compatible