Lightweight, aluminum mount with integral, raised "wings" shield and protect the sides and top of your FastFire sight from impact damage during combat or competition. Mount separately or as an effective secondary sight system for fast, both-eyes-open target acquisition during CQB. Mounting platform is contoured for a perfect fit to the FastFire sight and attaches with two, Allen head screws for a rock-solid hold during heavy recoil. Extra-large, steel cross-bolt and clamping bar provide a tight, positive lock on Picatinny and Weaver-style rails. Precision machined and hardcoat anodized for durability. Mfg: Burris SPECS: 6061 T6 aluminum, black, matte, anodized finish. 2" (10cm) long, 1-3/8" (3.5cm) wide, 1A 1/4" (3.2cm) high. 1.3 oz. (36.8g) weight.