Replaces the factory aluminum and steel parts with lightweight, long wearing titanium for faster, smooth cycling and improved accuracy. All parts are machined from solid, titanium-alloy bar stock that weighs lots less than steel but stronger and completely corrosion resistant. Kit includes a Tuned, Hammer and Sear; Extra Power Hammer Spring, Trigger Return Spring, Sear Spring, (2) Trigger/sear Shims and (2) Hammer Shims. Trigger features an oversized trigger face that gives increased leverage and a lighter feeling trigger pull. Includes overtravel stop screw and sear assembly pin. Extended Magazine Release extends below the receiver and is easy to operate for fast magazine changes. Extend Mfg: Power Custom SPECS: Titanium, silver finish. May require minor fitting.