Quote Originally Posted by BoilerUp View Post
Yes, "tuning" for minimum reciprocating mass at the bleeding edge of reliability is for hobby or competition guns. i was being a bit hyperbolic there. But what I'm trying to say is that you have to balance the system for an intended purpose and there is a point at which excess gas doesn't serve any useful function in even a military grade rifle. There are some barrels out there that are well known to have gas ports that are larger than they need to be even for "durability" so there are perfectly rational reasons to use AGBs in certain situation. I know we're talking about SBRs here where a heavy buffer and FA BCG is the norm for reliability in that system.
I absolutely agree with what you are saying. There are plenty of barrels out there that are way under and way over gassed. I stay away from them like i do a liberal with a anti gun agenda.

Hince the no need for an AGB commitment. With a good barrel it is not needed.