Ultra strong, lightweight, forged aluminum housing and the compact design make this the strongest, most technically advanced, combat gun sight available. Tremendous light transmission and unbelievable optical clarity rivals many high-quality hunting scopes. Mounts on the AR-15/M16 or AR-10/SR25 carry handle without modifications. Mfg: Trijicon SPECS: 7070-T6 alum. housing, black, anodized. 5.8" (14.7cm) long, 9.9 oz. (280 g) wt. 4x magnification, 32mm objective lens.