This HiViz Front Sight features a LitePipe which has a square profile instead of round and pre-drilled base for the retaining pin making easier installation. This model is compatible with Ruger LCR and LCRx centerfire 9mm, .38, .357. Does not fit LCR 22, 22 MAG, 327 Federal. Front Sight Length: 0.850″. Front Sight Width: 0.245″. Front Sight Height: 0.251″.