As for handguns, yep.

It does seem that the primary impediment to an emotionally disturbed person obtaining a firearm is emotional disturbance.

I was going to wonder how other countries manage the difficulty of defining what constitutes a firearm. Australia has a reputation for having an effective gun control policy, but The Source makes me wonder if that reputation is deserved.

"Despite the fact that several researchers using the same data have examined the impact of the NFA on firearm deaths, a consensus does not appear to have been reached."

in the decade after the NFA, non-gun homicide rates fell by 59% and gun homicides fell by the same 59%

The Wired article does point out the strangeness of the U.S. controls on the lower receiver but not the upper receiver with its rifled barrel, "a component that looks much more like a gun than the lower receiver and whose total lack of regulation is, frankly, bizarre".

It also stated that "buying or selling a ghost gun is illegal, but making one remains kosher under US gun control laws" but I guess this only applies to licensed dealers. And there is, probably, no hard data on what portion of gun sales go through licensed dealers.

Ironically, the state legislator who tried to have the bullet button outlawed in California is currently in federal prison for, among other things, gun running.

That's just the kind of weird story I was hoping for. Under "Political career":

In 1992, Yee was arrested for alleged shoplifting a bottle of tanning oil from the KTA Superstore in Kona's Keauhou Shopping Village.

Bonus points for the connection to the Hot Coffee mod.

This second thing was the bolt release.

I always thought he was just whacking the magazine to make sure the cartridges were lined up or something, like a pack of cigarettes. Probably the gun nuts were thrilled to see anything like a realistic reload on screen. I remember howls of protest on the IMDB page for "American Sniper" or "Hurt Locker" when a soldier's rifle jammed because some blood spilled on the cartridges. "It would just lubricate them!" I'm not going to look it up because IMDB and IMFDB and IMCDB are awful time sinks which already consumed more than my lunch hour.