You'd be safer putting a gun into the hands of a chimpanzee than into the hands of the average human gun-sucker. The chimpanzee wouldn't find any use for it, and would quickly lose interest.
Mr. GunSucker has no use for it either, but that doesn't deter or discourage him, nossir. In his hands, a firearm of the preferred type, specifically a large-mag centerfire pistol or an assault rifle, is simply a destructive device.
And that's my cue to re-introduce a proposal I've made before: Broaden the existing class of Destructive Devices to include ARs (and most autoloading handguns if I had my druthers). These are subject to strict rules, and are almost never found in civilian hands. (Goodness, the right to own mortars and anti-tank rifles is actually being infringed!)
At the same time the BATF regs are changed, a buyback period will start, during which the newly restricted shootin' irons can be turned in for reasonable compensation, no questions asked or names taken.
And after that, proscription, with criminal penalties for anybody who doesn't surrender his destructive device.
The Second Amendment will sit there untouched.