I am looking at building a stripped AR lower (that i currently own), and want to go SBR with it. but since i have another AR already, owning the short barrel for this lower does that constitute intent to make the other SRB? how does thiat work? I would hate to run into issues for no reason. I know that i would not be able to swap back and fourth from one to the other but who cares. having one SBR is enough why would you need to swap them? I just wanna cover my ass before i even look at it. and yes i know i must have the SBR paperwork before buying the upper. not a big deal there. thanks for any info you guys can provide.