Don't buy a barrel with the flash hider already pinned! You won't be able to get the gas block on!What methods to restrict the gas flow? Filling in some/all of the gas block port and making a new one? I was considering a YHM 14.5" fluted barrel with permanently pinned flash hider...
No, not really. Order a barrel, 14.5" or otherwise, and have it shipped direct to Adco (or anyone else that does the work, I always suggest them because I know they do good work). Ship your ACR barrel components to them and in probably a couple weeks you'll have a brand new barrel back.Ah... only way I'm gonna get something less than 16" out here is with it pinned. Guess that means I'll have to wait to see if BM offers kits with pinned flash hiders for those of us who live in pinko States where there's no chance of getting a stamp from BATFE.