Current 6mm Grendel barrel makers: BHW, McGowen and who else?

[StoneHendge]

1/9 or 1/10 or which other... one of my questions is what twist rate is preferred. I was -- idly -- looking at a 20" barrel but still not quite ready to pull the trigger. Or the 6mm mongoose, which I think is a 6mm Grendel wildcat.

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Nonetheless, the 105 Hybrids are very popular amongst the Baby S'more crowd and virtually all production barrels out there are 1:8. Sierra says 1:9 minimum for the 95 gr SMKs/TMKs. If you don't want to go bigger than the 95s, I would go with 1:9. If you do, I'd go with 1:8. But be cognizant that you may be limiting your range with lighter thin jacketed varmint bullets.

[badkarmaiii]

I want a 6mm Grendel/AR/Predator for my next build.
I think ideal would be a 22" ARP 3R with rifle +2 gas so a Seekins Select gas block will just poke out from the 15" handguard.
Hopefully, I'll get to test that gas block tomorrow on my 18", rifle gas 264/6.5 ARP with 13" handguard and SiCo Omega.