The Apex Action Enhancement Kit for the FNS and FNS Longslide model pistols (2014 manufacture and later) is a direct drop-in replacement of the factory polymer trigger trigger bar and sear. The patent-pending Apex design reduces trigger pull weight to give you an approx. pull weight in the 5.5 lbs range. Overall trigger travel is optimized to provide a smooth uptake while delivering a crisp trigger break.