Designed for use with slug guns, muzzle loaders, and rifles firing straight-walled cartridges, this Hawke Sport Optics 3-9x40 Vantage IR Riflescope boasts an illuminated reticle with five selectable brightness levels in a choice of red or green. It employs the classic 3-9x hunting magnification range and a generous 40mm objective lens for a bright, clear sight picture, even in lower-light conditions. Impact point adjusts at 1/4 MOA per click with total elevation and windage adjustment ranges of 85 MOA, 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 waterproof and fogproof.