If by "military-grade", you mean machineguns, howitzers, mortars, and suchlike, those are already restricted and have been since 1934. Major amounts of paperwork, plus a $200 transfer tax. In the case of artillery, you can only fire solid shot (or perhaps canister) out of the ones you do own, unless you want to go through the paperwork / tax thing PER BULLET for explosive shells.
And, of course, there's the question of such hardware in the hands of veterans. I'd bet that I could still field-strip and reassemble, and effectively shoot, an M60, M203, M16 (I currently own and AR15), or 1911 (which I have), 30 years after the fact.
Personally, my worst experience with endangering myself using military gear, involved an M67 immersion heater. You know how in Warner Bros cartoons, you occasionally see someone mixing dynamite with the firewood, and in the resulting explosion, the stovepipe-with-conical-roof takes off like a rocket? They actually do.
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And, of course, there's the question of such hardware in the hands of veterans. I'd bet that I could still field-strip and reassemble, and effectively shoot, an M60, M203, M16 (I currently own and AR15), or 1911 (which I have), 30 years after the fact.
Personally, my worst experience with endangering myself using military gear, involved an M67 immersion heater. You know how in Warner Bros cartoons, you occasionally see someone mixing dynamite with the firewood, and in the resulting explosion, the stovepipe-with-conical-roof takes off like a rocket? They actually do.