Mil Spec FoS

[Variable]

Heh heh. I like that thinking. I'm sure the bolt would blow first, but it's good to know anyway.

I'm typically a "hold my beer and watch this" kinda guy, but I will look for info that others can figure out too. Helps me get to enjoy future beers that way.

Then what do you get for a barrel that tapers down to .625 past the chamber, and stays that way all the way out (it'd have two bumped shoulders-- one for the gas block shoulder, and one for the muzzle thread shoulder)? Much thinner would be impractical I'd think.