Ruger GP-100 / Super Redhawk Hammer Spring 12lb. $9.97 12lb. Reduced weight replacement Hammer Spring. 18412 In stock Ruger GP-100 / Super Redhawk Hammer Spring 12lb. quantity Add to cart Categories: Ruger, Wolff Gun Springs Related products Remington 1100 & 11-87 (LT/LW/SP), 20ga. Barrel seal O ring $7.50 CAR15/M4 5.56/9mm Xtra Power Buffer Spring $24.97