S&W 39/439/3904 series XP magazine springs 3 pak $34.97 Magazine springs for Smith & Wesson pistols in +5% extra power. 73063 Only 1 left in stock S&W 39/439/3904 series XP magazine springs 3 pak quantity Add to cart Categories: Smith & Wesson, Wolff Gun Springs Related products Colt Government 1911 Conventional Recoil Spring 13lb. $14.97