Smith & Wesson K frame Hand, 3 pin $35.00 Part 72, 73 on the exploded diagram. Used, excellent condition 3 pin Hand from a 19-4, K frame revolver. Will fit other models of K frame revolvers. Out of stock Category: Smith & Wesson Related products Smith & Wesson K frame center pin $20.00 Smith & Wesson K frame Extractor rod spring $5.00