Tactical scope for mid to long range, Zoom magnification for further target acquisition. Dual Blue & Green illumination for different lighting conditions. Includes Green Micro Dot Optic for quick target acquisition for Close Range engagements. Scope is at the proper height for M4/M16 and AR15 rifles and carbines. Bullet Drop Compensation for 55 grain FMJ 5.56 NATO. Locking Quick Release mount .