Smith & Wesson N frame Hand, 3 pin $35.00 Part 72, 73 on the exploded diagram. Used, excellent condition 3 pin Hand from a Model 57, N frame revolver. Will fit other models of N frame revolvers. Out of stock Category: Smith & Wesson Related products Smith & Wesson K frame thumb piece nut, blue $10.00 Smith & Wesson M&P .45 Guide Rod & Recoil Spring 16lb. $54.97