Unfortunately, they're already tooled up thanks to the easy availability of black market weapons. Gun control laws only affect law-abiding citizens. They won't affect criminals, because criminals are, by definition, lawbreakers anyway.
My hope is that one day you might grace our shores with a visit, and see America through your own eyes, rather than through the words of a Leftist, America-hating international press. This Freeper would be pleased to show you around. We could go shooting
WADE'S EASTSIDE GUNS & INDOOR RANGE - Bellevue, WA
We could even go for a steak :-)
If I'm ever in the US, which I hope to be soon, I might just take you up on that offer!