Optimized for short-range tactical and target shooting applications, the Athlon Optics MIDAS TSR2 2 MOA Red Dot Sight is a rifle-mounted RDS system featuring a one-piece aircraft aluminum chassis, shock-resistant electronics, and a built-in Picatinny rail mount for dependable, field-ready service right out of the box. Fully multi-coated glass lenses maximize light transmission for a clear sight picture with optimum brightness and true color across the entire light spectrum. The illuminated 2 MOA dot reticle offers rapid target acquisition, while multiple user-selectable brightness settings keep you in full control for reliable field performance. Nitrogen gas purging eliminates all air and impurities for waterproof and fogproof performance. The ultra-efficient LED dot emitter offers an extended battery life of up to 50,000 hours on a single battery. If that's not enough, the included high riser mount offers natural 1/3 co-witnessing with iron sights on AR rifles.