Barrel Nitriding Post-Extension Attachment/Headspacing Loosening?

[WS6]

I was told that Daniel Defense's Nitrided barrels are treated after the barrel extension is installed/headspaced. Has anyone ever had one loosen up? I know DSA had issues with this a while back. Kindof concerned about it.

[Clint]

The extension will tend to loosen up during QPQ.

It needs to be retorqued / indexed and then the gas port drilled.

If nitride is done as part of the barrel making process, it's fine.

Doing it to a complete finished barrel may not be a good idea.

[WS6]

I have not heard of DD having any issues, yet, from doing it that way, though, but it does give me pause and is concerning.

[WS6]

Nitrited barrels have the barrel extensions retorqued post finishing. If this wasn't done, then yes, there would be problems.---Daniel Defense.

Thanks, just updating.