Trijicon ACOG BAC 5.5x 50mm Rifle Scope - Chevron - ACOG 5.5x50 Red Chevron BAC Flattop.308 Reticle includes flat top adapter. The chevron reticle is designed to be zeroed using the tip at 100 meters. The width of the chevron at the base is 5.53 MOA which is 19 in. at 300 meters. This allows range estimation for silhouette targets. Superior quality glass lenses Combat proven Fixed magnification Rugged aluminum alloy housing Both eyes open design