Short headspace with Sabre defense barrel

[Bedford]

I checked my gas system, and the adjustable gas block doesn't restrict gas, and the block is loose. The set screws are red loc-tited on, I must not have torqued them down enough when I put it on. I have a spare g.b. and will switch it out.

I was worried that too much pressure had caused the problems, but I think the headspace and everything is most likely not an issue.