Interchangeable style front sight, includes three litepipes in red, green and white. Litepipes store in litepipe changing key. Does not fit 22/45 Lite model. Will fit Ruger single six revolvers with adjustable rear sights. (replaces HRB2007) Also fits Browning buck mark pistols (except challenge, Buckmark 5.5 target, and Buckmark 5.5 field). Ruger 22/45 with adjustable rear sight (does not fit the 22/45 LITE), Ruger Single-Six revolvers with adjustable rear sight.