Manufactured from the same aero space steel alloy as the Premium Hammers. Extremely low mass due to innovative recontouring. Designed to be used for extremely light trigger pulls. Faster reset time due to low mass which reduces the chance of following with very light trigger pulls. Sear bearing surface micro honed to produce that 2 lb. pull easily. Heat treated to 50-55 Rockwell C for extreme durability. Mfg: Cylinder & Slide SPECS: For 1911 models.