Pardon the necropost:The whole mess is kind of FAFO. in the respect that you still have to find out what works for your rifle/suppressor/ammo setup. While all this nonsense has played out, I'm kind of surprised that nobody has offered a tapered port GB. With known "optimized" ports being around .076", a manufacturer could offer a gas port of around .088" at the journal end and taper it to the "state of the state" size at the gas tube. The restriction would be subject to the safety valve effect, the same as any other GB, fixed, or variable, but would give an optimized port to pass gas to the BCG. With all the other options, I'm really surprised this hasn't been marketed; it should be at least as good as a dedicated port, and could maybe be offered in a couple of sizes for the more popular gas journal sizes.BTW, that is a pretty sweet rifle, Boiler!