BDC 150 Reticle: Provides a .22 LR-specific BDC reticle and a 50-yard parallax setting for confidence and precision out to 150 yards and beyond—with the rimfire 22 long rifle. Generous, Consistent Eye Relief: Keeps your brow safe—even with the heaviest recoiling cartridges, lightweight rifles, and severe shooting angles. Zero-Reset Turrets: To simplify field adjustments, Nikon has integrated this feature into all new riflescopes. Just sight-in as usual, then lift the spring-loaded adjustment knob, rotate to your "zero", and reengage. Field adjustments are now as simple as dialing-in your subsequent ranges. Sun Shade Adaptable: 40 mm & 50 mm models. Fully Multicoated Optical System: Provides up to 98% light transmission and maximum brightness from dawn to dusk. Precise, 1/4-MOA Hand-turn Adjustments: Positive click reticle adjustments get you zeroed in quicker and maintain your setting—even with heavy recoil. Waterproof/Fogproof: Nitrogen filled and O-ring sealed.