Yeah, I keep hearing that with the 308 & 16" barrel... LOL
CMT has their forward blast device for 30cal. Perhaps after this weekend I'll want to look at it.
I'll be interested to hear how the gas system works for you. The 16" 308 that I had all the gas issues with was a RA barrel, so hopefully you won't have the same issue. If you do, at least I can give you a recommendation on a band-aid fix.