WTF PSA

When you would slowly close the bolt on Brenda the BEBoG carbine, it'd hang up just as the gas tube entered the gas key.

That's a symptom of a misaligned barrel nut.

This sort of thing can cause stoppages once the gun gets good an warm.

Luckily, I have the tools to properly align the barrel nut.

What I did not expect is for the barrel nut to be so overtorqued.  They went almost a full tooth past where they needed to go with it.

It's fixed now, and doesn't appear to have lost zero comparing the co-witness of the red-dot with the irons.

I will have to hit the range to confirm that, of course.