Sig has made a change in the front sight area on all new Sig's with the one piece slide. You can identify the old slide by the roll pin that goes through the slide side to side between the hammer and the ejection port, the new slide does not have it. Our current sight does not fit the new style slide we are working on a new sight to fit the new slide. The new sight should be available early in 2015. This is a Sig Sauer front pistol sight, for the P-Series, with a resin overmold. It comes in green or red. The sight's height is the same as the Sig #6. It fits the P-220, P-225, P-226, P-228, P-229, P238, and P-239. It does not fit P-250.