The trigger itself is ok, I have another one in my AR15, I like them.
It's the combination of the Smith and the hiperfire that is not working in my case.
I noticed that the hiperfire hammer hit the firing pin slightly below the center, it's "pinching" it.
Dropbox - IMG-20200301-WA0001.jpeg - Simplify your life
Dropbox - IMG_20200327_091149.jpg - Simplify your life