NcSTAR STP3942GV2 Rifle ScopeNEW Improved: Locking Quick Release mount and a more compact QR Lever NEW Improved: Scope Centerline height raised to 1 scope height and more room for low profile Rear BUIS NEW Improved: Lowered BDC Turret height, for lower mounting height for the optional 34mm Micro Dot mount and optic NEW: Blue & Green Color Illuminated reticle, with multiple brightness settings for each color 100 500 yard Bullet Drop Compensator (BDC) calibrated for M193 55gr. FMJ