This is the best drop in trigger system available for the M&P 9mm, .40, and .357 Sig. This kit includes the action enhancement parts of Duty/Carry Enhancement Kit and Competition Enhancement Kit and adds a robust trigger that reduces pre-travel by 20%. It includes trigger springs for both a 4-4.5 pound and 5-5.5 pound trigger, giving you the flexibility to decide between competition or duty/carry applications. The Apex Polymer Action Enhancement Trigger Kit directly replaces the factory hinged trigger with a solid body polymer trigger with a center mounted pivoting safety. The rounded face of the trigger provides a smooth comfortable surface for the shooter"s finger while firing. Apex Tactical Specialties S&W M&P Trigger Forward Set Sear & Trigger Kit FSS. Please Note: Please check your state regulations, hunting regulations, etc before placing an order with this supplier. Your order may be canceled if the item is not able to be shipped to your state due to their regulations.