Nah. That would be you.
Nope. YOU are trying to nit pick. Inversion fallacy.
Already know, thanks.
Nope no barrels were involved, I assure you.
There is no such thing as an 'assault weapon'. Buzzword fallacy. The AR-15 design is a semiautomatic conventional firearm. It shoots conventional ammunition (typically chambered for .223 ammunition, using a bullet that the same as a .22). This design is flexible for many applications, rugged, dependable, and is easily town down for cleaning and maintenance. A fine design.
Most folks around here use them for hunting or defense of their ranches and farms.
Define 'quickly'. Revolvers can shoot pretty damn quickly, after all.
Bump shooting is hard on a gun. None of them were able to last much more than ten rounds before jamming. He just picked up the next gun and started shooting with that.
Any semiautomatic can be bump fired. You don't need a special stock. Sometimes a fat beer gut is sufficient.
The Las Vegas massacre was a big deal. Fortunately, the shooter killed himself. Mandalay Bay casino and MGM was also responsible for allowing this to happen. They have been sued by the survivors (justly so). It was settled out of court.
Unconstitutional.
Howitzers are legal. I know of a few people that own and fire them. One fellow uses his to shoot down avalanches in the area before they get big enough to threaten people.
Those are legal to own and fire as well. I personally know of a couple people that build their own versions of these as well.
Flamethrowers are currently a more popular hobby.