Nice crisp trigger but no safety. - TRYBE Defense AR-15 Curved Drop-In Trigger

Got the trigger and held it for a few weeks before installing. When I took it out of the packaging the rivets were partially out. I tapped the back and everything seemed fine. Installed in the lower and trigger pull is light and crisp. Would be a great trigger but trigger pull is light and crisp even while on safe. Yes the hammer goes home even whrn the weapon is on safe. Maybe this one was defective.