This kit includes a spring kit as PRP's sear, disconnector, & striker safety that helps to smooth and lighten the trigger pull. to about 5 pounds.
The sear is CNC machined out of 440C stainless steel bar stock and heat treated to 53-56 RC. The striker safety is CNC machined from 146 stainless steel that is properly heat treated.
Does not fit the XDS MOD 2.