Smith & Wesson N frame cylinder stop $30.00 Part 67 on the exploded diagram. Used, excellent condition cylinder stop from a Model 57, N frame revolver. Will fit other models of N frame revolvers. In stock Smith & Wesson N frame cylinder stop quantity Add to cart Category: Smith & Wesson Related products Smith & Wesson K frame mainspring $15.00 Smith & Wesson K frame thumb piece early style, blue $35.00