Utilizing the patented Apex Forward Set Trigger Bar, the Forward Set Trigger Kit for the Sig P320 delivers a major upgrade in trigger pull performance. This kit helps reduce trigger weight by approx. 30%, trigger travel approx. 30%, and rest approx. 20%. It is for use in the Sig Sauer P320 pistols (with factory safety upgrade), including the X-Series models. Included is one of each of the following: Curved Advanced Trigger; Forward Set Trigger Bar; Over-Travel Stop and spring. NOTE: Not for use in Thumb Safety models of the P320 nor does NOT function in the Sig Sauer P250.