The Hammer, Trigger & Disconnector are precision machined from S7 tool steel with a proprietary sear manufacturing process that yields an incredibly smooth engagement surface and all parts are then case hardened before Black Oxide finish.The CNC machined Aluminum cassette has adjustment set screws built in that allows the user to set perfect pin tension and the trigger can be installed with standard pins or the threaded screw types seen in previous designs.The cassette is Type 3 Hard Coat Anodized Class2 Black and then Laser engraved for identification.   Comes complete with Trigger Assembly and Pin Set.