HIVIZ Sig Fiber Optic Front Sight Sig Sauer interchangeable front sight Includes 6 LitePipes in red and green .080 inch diameter Carrying case for LitePipes Fits P220 P225 P226 P228 P229 P239 and P250 HiViz recommends gunsmith installation for all dovetail sights. Due to manufacturing tolerances, some firearms may require additional fitting.