Not to answer for Dr. Bill, but all stocks I believe were custom fitted to each shotgun. You must use a Featherweight stock if your gun is so. A Regular frame will not fit. Some older Regular frame stocks have 2 wood screws on the trigger guard and it goes close to the grip cap. The drop at comb, drop at heel and LOP might be different. Unfortunately the only way to tell is to try the stock and see how close it does fit.