The Action Enhancement Kit for the S&W SDVE replaces the factory hinged trigger with a solid polymer trigger that includes a center mounted pivoting safety. The rounded face of the trigger provides a smooth, comfortable surface for the shooter's finger. The trigger also reduces pre-travel by approximately 20%, and over-travel by 10% when compared to the factory trigger.The SD Spring Kit produces a smoother trigger pull and improved reset, and is designed for Duty/Carry Use, Self-defense, and recreational shooting. Kit Includes:Polymer SD Action Enhancement TriggerTrigger Return SpringSear SpringStriker Spring FeaturesReduces pre-travel by 20%Reduces over-travel by 20%Reduces trigger pull weight by approx. 2lbs from factorySmooth Trigger PullImproved Reset