This is a Trijicon ACOG 4x32 LED Scope with a battery illuminated red crosshair, .223 ballistic reticle with a TA51 mount. This Trijicon Battery ACOG delivers on engineering and enhanced user control. Powered by a single AA battery, the electronics offer an outstanding level of reliability with a straightforward brightness dial, allowing the operator to determine how much to illuminate the reticle, even in transitional lighting. The body has been optimized by moving the RMR mount forward to maximize its performance in conjunction with the ACOG. Fully night vision device compatible, the Trijicon 4x32 Battery ACOG is also compatible with most other 4x32 ACOG accessories available. It comes with an AA battery, a lenspen, and a hard case.