BARSKAG��s Multi-Rail Electro Sight is designed specifically for tactical shooters that need a versatile scope for both short distance quick acquisition shooting and med to long distance shooting. Designed with Integrated Weaver style 7/8G� Picatinny tactical rails which allow you to customize your scope with additional aiming accessories. Easily attach and use in combination with laser sight, flashlight or secondary sight. Ideally use the scopes external rails to attach a laser sight that is zeroed in at a short distance 50 yards and then zero the scope Reticle in at a longer distance 100 yards , this allows you to instantly shoot targets at two different distances.Model# AC11398Magnification 1xObjective Lens 30mmReticle IR Cross DotExit Pupil 9mm-16.5mmField of View ft 100yds/m 100m 47.2/15.8 1xEye Relief UnlimitedAdjustment Knob Adj Rheostat, Windage and Elevation AdjFinish Black MatteWeight 14ozLength 5.5 inchIncluded Accessories Flashlight, Red Laser Sight, Barska 30Mm Electro Sight With Flashlight AC11398