BudsGunShop.com - Hardened steel?

hardened but only Tisas can answer that question and I cant find a contact for Tisas

Mike, all reviews on the Tactical Trigger say "Fully Hardened" however, I cannot find the actual metal specifications Sir. Maybe Buds Customer Service can shed some light at 1-859-368-0371 9am-9pm EST Mon-Fri. or use the Blue Chat now button at the bottom right corner 9am to 9pm Mon-Sat and 11am - 7pm Sun (7 days a week).