My scout squad did the same thing. When I took it apart, a small piece of metal fell out of the trigger assembly. shipped it off Springfield Arm.and they fixed it.
I remember seeing a You Tube video where a guy had the same problem
To soon. Last year my brother had knee replacement.
Sent home the same day, that night he had a blood clot
that went to the brain, major stroke. He passed 3 days later.