This kit is a combination of the apex duty/carry kit for the m&p shield 45 and shield 45 m2.0 and the apex action enhancement trigger for the m&p shield 45 and shield 45 m2.0.The trigger kit directly replaces the factory hinged trigger with a solid aluminum trigger body which reduces pre-travel and over-travel by approximately 20%.It features a smooth face with a center-mounted pivoting safety that maintains factory safety values.The apex duty/carry kit for the shield 45 and shield 45 m2.0 was designed to provide the pistol owner a smooth, consistent trigger pull that is approximately in the range of 5.0 to 5.5 lbs.With the advantages of shorter over-travel and more detectable trigger reset.Finish: BlackModel: Action EnhancementMaterial: Aluminum