the criterion is said to be chromed and then hand lapped, probably not a bad choice. So maybe the list is in decreasing order:
Criterion (button rifled, chromed, hand lapped)
Daniel Defense hammer forged and chrome lined
FN (double chrome thickness)
way down the list Bravo company-Green Mountain
if I made this post on M4 carbine I would either be banned or an "industry professional" would come along and defend green mountain barrels..
