HAWKE VANTAGE IR 3-9X40 SUBSONIC SCOPE: Designed as a multi-purpose, utilitarian mid to long-range optic, the Hawke Optics 3-9x40 Vantage IR Scope boasts a partially-illuminated crosshair reticle with five selectable brightness levels for use in most lighting conditions in either red or green. Red is ideal for low-light conditions, while green is easier to see in bright sunlight. The 40mm objective draws in generous amounts of light versus smaller objectives while maintaining a low-profile. Covered turrets help guard against accidental adjustments while a fast-focus collar and knurled rheostat allow you to quickly adapt to rapidly changing situations. Complementing the performance of the scope is a lightweight and durable anodized aluminum housing, with a 1" one-piece maintube that is nitrogen-filled and O-ring sealed to be water and fogproof. Registered reticle design exclusive to Hawke. Aim points calculated for your specific caliber. Easy to zero and outstanding downrange accuracy with illuminated aim points for all lighting conditions Yardages etched into the reticle field of view, designed for use on maximum magnification. Designed for the .22 LR Subsonic caliber. Zero on the maximum magnification at 50 yards and all aim points are pre-calculated.