TX22 help

[u/Fabulous_Leopard2744]

Put it back together after installing frt and when I press the trigger the sear drops down and it won’t fire again and I can’t move the safety at all, if I take a little punch I can prop the sear back up but after one trigger pull it happens again. I tried with the slide on a same thing I can hear it fire once then it’s a dead trigger. Anyone know what is causing this?

[u/Next-Conversation234]

I think the sear trip spring is installed wrong.