This set contains the Ultra Match thinned and chamfered Commander Hammer, Super Lite Low Mass Sear and Match Disconnector. All parts are heat treated to 50-54 RC. This set is for the 1911 pistol builder who wants a lighter, more stylish thinned and chamfered hammer capable of being tuned to trigger pull 3.5 lb. and lighter. Suitable for any 1911 pistol.
Big Book Catalog, Issue:73, Page:117