Here's a thought. Let the guns be. Regulate the bejaysus the sale of ammo! Require a licence, limit the amounts, apply the rules to self-loading fans too. Make customers return used casings before buying more. Let them have their guns, but rigorously control the bullets. Works for dangerous pharmaceuticals~~no, wait. Ah, ¥%¡|!¿>^ it! Back to Adams' formula. It's a metaphor.
I'm not in the US or the UK, I'll just get me hat...   < ><>how many times must the cannonballs fly . . .