Trijicon 1911 RMR Mount w/Integrated Night Sight Set Black Front/Black Rear Outline w/Green Lamps. These Red Dot Sight Mounts by the experts at Trijicon do require slide machining from a professional gunsmith. The Trijicon 1911 RMR Mount with Integrated Night Sights fits the 1911 and 2011 platforms to be the ultimate fixed rear sight solution. Specifications for Trijicon 1911 RMR Mount w/Integrated Night Sights Black Front/Rear Outline: Manufacturer: Trijicon Color: Green/Green Gun Make: Colt Gun Model: 1911 .45 ACP Gun Type: Pistol Fabric/Material: Metal Red Dot Sights-Footprint: RMR Attachment Type: Professional installation recommended. Optic Cut: Not Applicable Condition: New Front Material: Tritium/Paint Rear Sight Color: Green Front Sight Color: Green Features of Trijicon 1911 RMR Mount w/Integrated Night Sights Black Front/Rear Outline: Instantly visible sight picture in no-light or low-light situations: Tritium phosphor-filled glass lamp provides battery-free glow allowing for a visible sight picture in all lighting situations. Increased daylight dot visibility: White-painted rings around tritium lamps enhance user's ability to see sight picture in bright-light shooting situations. Enhanced protection from heavy recoil and harsh cleaning solvents: Tritium gas lamps are contained within protective aluminum cylinders and have additional silicone rubber cushioning. Evenly distributed light from tritium lamps: Each Trijicon tritium lamp is capped with a sapphire jewel that helps evenly distribute the light from the lamp and also acts as an additional layer of protection from puncture and cleaning solvents. Package Contents: Trijicon 1911 RMR Mount w/Integrated Night Sight SetBlack Front/Rear Outline Trijicon 600757: 1911 RMR Mount w/Integrated Night Sight SetBlack Front/Black Rear Outline w/Green Lamps