Wilson Combat's Custom-Tune Spring Kits are designed to easily and inexpensively improve the action and functionality of your handgun. These quality spring kits feature the finest gun springs available, made from high-tensile spring wire for the finest possible action tuning jobs. Kits include the various springs necessary to assure reliable function, smooth operation, consistency, and long life. - Set aus 4 Federn: 1 Schlagfeder 'reduzierte Kraft' 3 Rebound Federn -12/13/14 lbs-