You won't need to hide anything. They will not come door to door confiscating weapons.
What they will do, is confiscate them if you take them out into public and throw you in jail for noncompliance of orders to register or turn them in.
Door to door.....I think they know that would be a huge mistake.
Going door to door will be pointless as everyone will hide their weps at the first sign of searches. We will all be criminals. No big deal.