Aftermarket carbine length gas barrel

[breech]

If one were to start looking at barrels for a build and want to keep the carbine gas system length, what would be a premium barrel?

[USMC79to83]

In no particular order, and I'm sure there's more...

Noveske
http://www.noveskerifleworks.com

CMMG
http://cmmginc.secure-mall.com/shop/?shop=1

White Oak
http://www.whiteoakarmament.com/

Denny's - Also sells Noveske
http://www.global-tactical.com/

LMT
http://www.lewismachine.net/

BCM
http://www.bravocompanyusa.com

Rainier Arms - Reseller
http://www.rainierarms.com

[Gary G23]

http://www.sabredefence.com/