So, it wasn’t the issue. Even with the buffer tube completely off, when I manually pull the bolt back it gets stuck in the same position… I’m lost for ideas ☹️
If I move the upper receiver slightly the bolt can be moved back, it’s like it’s getting stuck on the actual receiver.
So far I have:
Taken the hop up out, it got stuck.
Removed the trigger box, it moved freely
Made sure the box is seated correctly like in videos, still got stuck