Ultra lightweight hammer quickens lock time for the fatest possible follow-up shot. Fully-cut hooks and pre-ground engagement surfaces don't require additional work. Wire EDM'd and then machined to provide long life for competition use. Also available in a kit (203SD) so you're ready to go with a trigger job that is crisp and smooth. Recommend use with Ultra Low Mass Sear and Match or Ultra Low Mass Sear. Mfg: Nowlin