Pete, try to follow the words. Perhaps I can make myself clearer, and rather than saying
"the FAA may lift the ban on carrying on board, but the airline ultimately has the right to set policy, it's a private enterprise, and should the airline decide that no one carries you are left with the choice of leavin your gun, or flying someone else", I'll try petespeak instead:
If the gooberment lifted the regs not allowing you to take your piece with you, the airlines can still be horse's asses about it and say "no way José" to your God-given constitutional right. And since it is their plane, you can either leave the piece home, or shag your butt to some other airline.
Yeah,and if frogs had wings they wouldn't keep bumping their asses.