The Trijicon RMR Dual-Illuminated Red Dot Sight was designed to improve precision with any firearm. This small sight is extremely durable with its forged aluminum housing, and it features audible click adjustments for windage and elevation. The sight is also very versatile as it can be used alone or mounted on an ACOG sight. Dead batteries will never be a worry as this sight is completely battery free; fiber optics and tritium provide all the illumination for this sight. The Trijicon RMR is covered by a limited lifetime factory warranty. A Trijicon RMR Mount will be needed for your specific application. The picatinny mount is product 470723. Multiple pistol mounts are also available. These are available separately.