One of my co-workers did a traffic stop in Harris County last week and recovered a Glock with a full auto back plate switch. The thing is, the switch was machined out of brass... and the brass was still every bit as shiny as gold.
It was totally untarnished and still fresh and un-oxidized.
Basically, it had just been manufactured.
I'm all about the 2nd not being infringed upon for any reason, and in theory I support the ability of every LAW abiding AMERICAN citizen to own full auto grenade launchers (I want a Mark 19 myself), but Houston has had a real problem as of late with felonious illegal aliens with cartel connections who have access to more firepower than the average turd.
I recovered a "ghost gun AR-15" a month ago with M855 green tip ammo in it, and a co-worker recovered an AR-15 last week with a brass catcher installed. I know a brass catcher is a $15 amazon part, but that's the first time in my career that I've seen one and it shows a greater sophistication than I'm used to seeing from criminals that usually aren't smart enough to be able to tie their shoes...