Given your original thread's concept of forced disarmament of civilians in order to resupply a routed fighting force...
Word of that type of thing spreads fast. I think you'd get a pretty uniform response of:
1. Lay folk turning back around with their "primary" rifle and support system for it, and returning back home.
2. Loading up on a "secondary" rifle and support system for it to donate.
I have no problem donating my backup AR-15 to a fighting force, on my side, in need of it. Heck, I'd throw in several other rifles, too...
But the rifle I personally know best and would have at my bedside in tough times is my M14... and no one is taking that away from me.