Fusion Firearms Pro-Series 1911 Striker Hammer. CNC machined from 400 series stainless steel solid bar-stock and heat treated. This newly designed hammer is skelontonized for light weight but also beefed up in the critical high stress areas that a performance 1911 hammer requires. The serrated thumb pad is also enhanced for easy access and fast acquisition of the hammer. Sear contact area is already prepped but you can hand stone to your liking. Some standard fitting may be needed. Will work with all 1911 Colt Style pistols, models, clones and sizes. This is a high grade premium, professional gunsmithing part.