Nikon P-223 BDC 600 Riflescope with Rapid Action Turret, Black, 4-12x40 polymer, aluminum Imported Features the BDC 600 Reticle with open circle aiming points and hash marks from 100 to 600 yards Make quick hand-turn -inch @ 100 yard adjustments with Rapid Action Turrets Made with Nikon's fully multicoated optics for maximum brightness and light transmission Adjustments are made easy with Spring-Loaded Instant Zero-Reset Turrets Optimized for use with Nikon's Spot On Ballistic Match Technology