With hiviz revolutionary litewave design now you can change colors quickly in their rear sights. 0.070Diameter LitePipe. Sight height is 6.1 mm for use on the GLLW11 42 and 43 only. Interchangeable style front sight, includes three LitePipes in green, Red and black. Litepipes store in LitePipe changing key specifications: - fits: Glock 42 in .380 - dimensions: 5" x 3" x .1" - weight: .5 oz