AR Buffer Tube Rotating Inside Lower Reciever
While doing some cleaning on my AR I noticed my buffer tube was rotating inside of the lower receiver. The castle nut is properly staked and I replaced the buffer tube hoping it would solve the issue, but it has not. I noticed the threads on the buffer tube were stripped on the left side but I do not know the status of the threads in the lower since I had the work on the weapon done by a gunsmith. Obviously, I think the threads are stripped in the lower and that's causing the rotation. Is there a way to fix this without replacing the lower or is there anything else I'm not thinking of that could be causing the rotation?
AR Buffer Tube Rotating Inside Lower Reciever
My first recommendation is to fire your gunsmith.
This is likely an easy five minute fix if you're mechanically inclined. If you're not, then take it to a different 'smith.