This trigger kit for the Echelon features our Hybrid Trigger Shoe which combines a flat faced trigger with a small, curved surface at the tip of the trigger. Our unique design offers the benefit of a flat faced trigger and the curved section at the bottom helps position your finger consistently on the trigger. The trigger and trigger safety are precision CNC machined out of 6061 Aluminum and anodized. Other parts included are a striker spring, striker safety spring, sear spring, safety sear spring and trigger spring. The combination of parts reduces trigger take up by about 60%, total trigger travel by about 46%, and reset by around 20%. The trigger pull weight is also reduced to about 3.5 lbs. Specifications for Powder River Precision Springfield Echelon Trigger Kit: Manufacturer: Powder River Precision Fabric/Material: 6061 Aluminum Trigger Shape: Hybrid Flat/Curved Trigger Pull Weight: 3.5 lb Gun Make: Springfield Armory Gun Model: Springfield Armory Echelon Condition: New Package Contents: Powder River Precision Springfield Echelon Trigger Kit This product is compatible with the following gun models: Springfield Armory Echelon