Can you ban heroin use? Given that US federal law for being caught with a mere pound of heroin is life in prison yet more than a half-million people in the US have used heroin in the past year, I'd say either no or that the cost of doing so would be intolerably high (for example, killing on-the-spot anyone even suspected of either buying, selling or possessing the drug without due process might work, but that cost would be awfully high and probably intolerable). And heroin use is probably not protected by the constitution.
Can you ban AR-15s? Just like heroin, you can pass legislation to do so, but in reality, no, you really can't. Because unlike heroin, AR-15s are easy to make. Really easy. Unfortunately, because of fear of anti-AR-15 legislation, there is now a burgeoning underground market for the equipment to make critical AR-15 components:
But even fears of such legislation have lead gun owners to stock up on guns and ammunition after every mass shooting in recent history. And now a newer trend has emerged in the days since Omar Mateen killed 49 people with a handgun and a Sig Sauer MCX rifle: sales are spiking for the equipment and materials used by DIY gunsmiths to make their own, fully-functional, semi-automatic weapons.
Using power tools, chunks of aluminum, and cheap, consumer-grade digital gadgets, those firearm-focused members of the maker movement fabricate homemade weapons like AR-15s and AR-10s that skirt all regulation and would be untraceable in some imagined, future crackdown in which the government were to seize registered weapons. “People are hopping off the mainstream train and accepting an underground dissident mentality when it comes to guns,” says Cody Wilson, the founder of the Austin, Texas-based DIY gun group Defense Distributed. “They’re making the connection: If [an AR-15 ban] is enacted, I can get this machine and make one anyway.”
Since the fall of 2014, Defense Distributed has sold approximately three thousand of the $1,500 devices it calls the Ghost Gunner, a computer-controlled, one-foot cubed milling machine designed to let anyone carve their own aluminum body of an AR-15 at home. Since all other parts of the gun can be bought without any regulation, the result is a lethal weapon that’s free from background checks, waiting periods, serial numbers, or any other government involvement.
On a typical day, Defense Distributed sells four or five of its gun-making machines, according to Wilson. But on the day after the Orlando gun massacre, it sold seven. The second day after the killings, as Democratic senators were filibustering, it sold 11. In all, Defense Distributed’s total revenue has jumped from around $30,000 a week to more than $50,000 last week, the most sales it’s seen since the hype around the Ghost Gunner’s initial launch 20 months ago.Those are basically cheap CNC mills that are the same as what's used to machine every metal prototype part in the world, so those can't be banned without bringing new product innovation all over the world to a complete halt.
So congratulations anti-gun people. You have now guaranteed that not only can the AR-15 never be eradicated (and it never could've been), you've also guaranteed that any criminal and/or would be terrorist can make an untraceable AR-15 cheaply and easily no matter what future legislation is enacted.
I'm guessing that's a good example of an unintended consequence.