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 center pin spring $5.00 Smith & Wesson K / L / N Frame Reduced Power Shooters Pack $29.97