Well, my advice is that if you rely on any components or loaded ammo which are American made, stock up a bit. I've never seen anything like this, ever. Shelves are stripped bare with not much for sale. Even .22LR ammo is getting hard to find in many places.
People, regular ordinary people, are openly talking civil war if Obama tries to confiscate guns, any guns. They passed one law so far, in New York, and there is massive, almost universal non-compliance. Obama has bought over 1 billion rounds in the last few months for his homeland security forces, and the supply is being deployed to staging areas around the country.
In Seattle, the local government tried one of those silly, politically correct media darling events called a 'gun buy back' where they offered a paltry $100 for a handgun and $200 for a long gun, no questions asked. So, a small army of people show up, surround the place holding signs saying things like 'Sell us your guns instead', 'Cash for guns', etc. It turned into a chaotic arms market right there on the spot.