Sell it - If you're unattached enough to to be thinking about it, this is the very best time to sell. And I think the price is going to come back down. Any ban has to make it through the house, and with 8k people a day joining the NRA I don't see the traditional pro gun politicians changing their stance. If this even gets that far, any ban will die in the house.
Worst case scenario something does pass and you'll have a bolt gun, which - if .223 goes through the roof - will be cheaper to run during a ban anyway.
si vis pacem para bellum