Joe Bobs carries 'em and OdinWorks customer service is top notch. Operator error sent the guts of my adjustable gas tube down range and they fixed it while I explained my problem. They asked for my barrel that I happened to have in the truck and they pinned the gas hole and found that it wasn't drilled all the way through. They opened it up for me right then and there and it wasn't even their barrel. Quality folks!
I recently purchased a white oak 18" fluted SS SPR. Barrel with a full length gas system. 1-8" twist. I have not had a chance to accuracy test any loads, but it is shooting 62gr. Green tip around an inch at 100yds, and it is pretty light.
I built an AR for a buddy recently on a BHW "RTS" barrel, 18" coated black. I'm not usually a fan of the balance in lightweight AR's, but this thing sets up really clean.
The RTS line is their "standard weight" barrel, but I have to say, it's much lighter and smoother handling than my 16" bushy carbines.