Item Description: Designed for Close Quarter Battle Recommended for airsoft， training， or simulation use only! Full Polymer Construction for Durability Fully adjustable for windage and elevation. Spring loaded flip-up design， release lever can be reached on left， right & top position. Fits for any standard 20mm weaver rail. Height above rail，stowed: 0.51in Length，stowed:2.6in Length，deployed: 1.5in Color: blackPackage Includes: 1 x Back Up Front and Rear Sight Set