Government contracted to Mil-Spec tolerances with the same hardness and material guidelines used in service rifles. Trigger, Hammer, and Trigger Guard are polished 8620 steel magnesium and coated with black oxide by the manufacturer. Trigger and standard black pistol grip (A2 type) are included. Average trigger pull weight is around 8 lbs per ARMY TM 9-1005-319-23&P guidelines.