Nikon M-223 BDC 600 8489 3-12x42SF Riflescope (Black) BDC 600 Reticle offers unique open circle aiming points and hash marks from 100 to 600 yards Wide magnification range; long eye relief; fully multi-coated optics for up to 92 percent light transmission One-piece aircraft-grade aluminum tube construction; scope mounts on any rifle action regardless of caliber--including magnum-length actions Waterproof, fogproof, and shockproof construction; full lifetime warranty