XS Sight Systems Folding Rear Rifle Tritium Sight CSAT Aperture Matte Black Standard. With Milspec Dimensions the Sight Locks Into Position and Attaches to Any 1913 Picatinny Rail. Rear Sight Features XS CSAT Same Plane Aperture: Cqb Situations Made Easy With Notch Providing a 7 Yard Zero Aperture a 100 Yard Zero Or Flip to the Large Battle Aperture All While Maintaining Zero. Specifications for XS Sight Systems Folding Rear Sight CSAT Aperture: Manufacturer: XS Sight Systems Front Sight Color: White Rear Sight Color: White Color: Matte Black Fabric/Material: Hard Coat Anodized Aluminum Steel Attachment Type: Picatinny Additional Features: Folding Gun Make: AR Platform Illumination Type: Tritium Gun Type: Rifle Included Accessories: AR Tool Mount Type: Picatinny Finish: Blued Features of XS Sight Systems Folding Rear Rifle Tritium Sight Aluminum Base; Steel Clamp and Aperture; No Questions Asked Warranty Package Contents: XS Sight Systems Folding Rear Rifle Tritium Sight AR Tool XS Sight Systems AR-2014-8: Folding Rear Rifle Tritium Sight CSAT Aperture Matte Black Standard