Nikon M-223 4-16×42 BDC 600

BDC 600 Reticle: Developed specifically for the trajectory of the
.223 Rem 5.56 NATO round with 55-grain polymer tip bullet, the
new BDC 600 reticle offers shooters unique open circle aiming
points and hash marks from 100 to 600 yards.Eye Box Technology: Every model features an impressive 4-time
zoom range and four inches of constant, non-critical eye relief. A
massive ocular lens delivers a huge, exceptionally bright, high-
resolution sight picture.Waterproof, Fogproof, Shockproof: Nitrogen-filled and O-ring sealed.

Ultra ClearCoat® Optical System: Nikon has engineered the entire
optical system to provide the shooter with a bright, sharp, incredibly
flat sight picture and light transmission up to its theoretical
maximum—95%.

One-piece Main Body Tubes: For minimum weight and maximum
strength and durability.