Guns are only based if you make crime with it. Just having a gun doesn't mean shit. Especially in the US, where you can buy it like fucking beer. Is buying beer based? I don't think so.
In other countries it's just a matter of some bureaucracy. Like getting driver's licence. Not based either.
Using gun in a war conflict is not based as well. You're forced to use it to fulfill ambitions of some politicians.
Drugs are only based if it's only your personal decision to use them on a purpose and you can control your addiction. Falling into addiction after someone's offered you a drug? Definitely not based.