the gas port is not reduced. I read that somewhere too. I did not want to have to use an adjustable gas block either. but that is not the case on either their 16" or their 18"
both shoot awesome, very accurate. but they don't have reduced port sizes. my next barrel will come with a gas port drilled so that i can drill it myself. the somehow claim that it is reduced, although it doesn't say anything about that on their website.