It's possible. Perhaps likely someday. As far as how the taking clause goes, if sales and transfers are banned then the value becomes $1. So sure when confiscation time comes you can sue the government for a buck. As far as refusing to turn them in... don't look for mass raids fanning out. Look for 2-3 well publicized one house raids per community with the owners carted off to prison. That will be enough to give the 50% that didn't turn them in on time something to think about. Most will turn them in. The 5-10% that are left will be easy pickings. One house at a time.
Proud Life Member: National Rifle Association, California Rifle & Pistol Association, and the Second Amendment Foundation.
Annual Member: Revolutionary War Veterans Association (Project Appleseed) and the Madison Society.