This set contains the parts needed to attain specific trigger pull weights for a 1911. Perfect for tactical or match use. Each part has been heat treated for long life and durability. Steel in the white. Requires fitting and installation by a qualified gunsmith. Springs have been prepped and matched at the factory. When properly installed, this set should result in an approximate 3 1/2 pound trigger pull.Kit Includes:DisconnectorSearMainspringSear springTactical 2 style hammer