HWZ Tactical Folding Front & Rear Set Flip Up Backup Sights BUIS Black

Notice: Sometimes if you can't make the adjustment of the sight, please check if there is a blocking pin inside and remove it and then you should be able to adjust it, if the adjustment is fine, please ignore this part. Designed for Close Quarter Battle Spring loaded flip-up design, release lever can be reached on left, right & top position. Fits for any standard 20mm weaver . Weight: 1.3 oz. Height above , stowed: 0.51 inches Length, stowed: 2.6 inches Length, deployed above : 1.5 inches Package Includes : Back Up Front and Rear Sight Set Color: Black