most durable 6.5 barrel?

I dont even know of any CHF CL 6.5 AR barrels?
Might wanna take a look at a SCAR 20..
That's correct, I haven't heard of any either. Which is weird if you think about it. It seems like the technology should scale. Just need a different Mandrell. But maybe not.

I love our Noveske CHF double chrome-lined Barrel. Seems like it still shoots well even with a pretty moderate firing schedule.