NcStar 3-9X42 USS Gen II/ Mil-Dot w/Micro Red Dot VFC You can quickly switch between

You can quickly switch between High and Low Intensity and Strobe feature

and lightweight

Rheostat Knob with Three Brightness Levels for each of the Red

The battery goes in the top upper receiver (stick type only)

mid / high ROF

NcStar 3-9X42 USS Gen II/ Mil-Dot w/Micro Red Dot VFC You can quickly switch betweenImproved: Scope Centerline height raised to AR15 1 scope height and more room for low profile Rear BUIS Blue & Green Color Illuminated reticle, with multiple brightness settings for each color Improved: Lowered BDC Turret height, for lower mounting height for the Micro Dot Reflex Optic Improved: Auto Locking Quick Release mount and a more compact QR Lever The Ultimate Sighting System (USS) Gen II gives you all the Benefits of a Mark III Tactical 3 9X