I continue to find it interesting that there are those who want supreme authenticity and yet want a size other than a regular, when the original A-2 jacket was only produced in regular fittings. I'm not passing judgment on these individuals and I do understand there's a difference between paying for a jacket and being issued one, but I still find it a curiosity since it technically runs against the grain in endeavors for maximum authenticity. It's a bit like buying a hyper-accurate copy of a WWII jeep and wanting air conditioning or power steering and brakes because such features make it more comfortable or drivable. Kinda takes away from the authentic experience and look in my mind.
I hear you but I think that's going too far. You want the jacket to be accurate but for it also to fit. We don't all have period accurate bodies. It's not about power steering and brakes and air con. It's more like being able to adjust the seat further back if you have long legs. That's all.