Trijicon AccuPoint 2.5-10x 56mm Rifle Scope - MIL-DOT Crosshair - The TR22 AccuPoint has extreme light gathering capabilities with a huge 56mm objective lens, 30mm tube and the highest quality glass available. The scope is illuminated though the use of fiber optics and tritium, providing a vivid aiming point without the need for batteries. If your hunting calls for long distance shots, this AccuPoint is for you. Variable power Battery-free illumination Second focal plane Waterproof Superior quality lenses Manual brightness override