Wouldn't changing the barrel affect the tax stamp? Say I have a 9mm and serialize it then swap barrels or is it similar to an AR lower where you can change uppers no problem?
I’m no legal eagle but as I see it, it would work the same way as an AR lower in my mind seeing as the receiver is the SBR not the barrel. Note: I decided to just stick with my OG 7.62x25 setup but the option to switch is there but it’s a slightly more in-depth procedure
