Smith & Wesson K frame center pin $20.00 Part 2 on the exploded diagram. Used, excellent condition, center pin from a 19-4, K frame revolver. Will fit other models of K frame revolvers with barrels over 2.5 inches. Only 1 left in stock Smith & Wesson K frame center pin quantity Add to cart Category: Smith & Wesson Related products Smith & Wesson K frame Yoke, old style with gas ring $100.00 Smith & Wesson K / L / N Frame Reduced Power Shooters Pack $29.97