Designed to hold up to any hunting situation, this scope features high quality coated Japanese glass lenses to ensure maximum edge to edge lens clarity and brightness in low light conditions, plus improved seals and internal fittings with precision CNC machined parts for reliable performance in the field. Nitrogen filled, waterproof, fogproof and individually shockproof tested. 1/4 MOA adjustments (4.5-14x 42mm has 1/8 MOA) with finger adjustable turrets. Rubber enhanced zoom ring ensures positive traction and adjustment in wet or icy conditions. Speed focused eyepiece, CR2032 3V battery powered, and covered by a lifetime factory warranty. Nikko Stirling rifle scopes are rated for use on airguns.