Built legion-strong and combat-ready the Firefield Impact Mini Reflex Sight packs big red-dot performance into a small ruggedly reliable optic complete with an illuminated 5-MOA red-dot reticle featuring 5 brightness settings. Perfect for ultra-fast target acquisition in close quarters this mission-driven shockproof sight boasts advanced scratch-resistant anti-reflective AR-red coated glass infinite eye relief with 50-yd parallax setting and a crystal clear field of view. IP55 weatherproof protection and a 6061-T6 aircraft-grade aluminum housing keep your sight protected even in harsh environments. The Firefield Impact Mini Reflex Sight mounts easily on a Weaver and picatinny rails and runs up to 40 hrs. on a CR1632 battery. This reflex sight kit includes low profile and co-witness mounts a cover CR1632 battery and adjustment tools.