SWAROVSKI OPTIK KAHLES K318i 3.5-18x50i Riflescope with Left-Side Windage (MSR Reticle)The Swarovski Kahles K318i 3. 5 18x50i Riflescope means optical and mechanical perfection packed into an ultrashort design. It features a precise, illuminated MSR MIL based reticle in the first focal plane. The scope is capable of producing sharply defined images throughout its magnification range of 3. 5 to 18x. The main tube has a diameter of 34mm, which is standard for tactical scopes. The elevation and windage adjustment works in a counter