@krelvar
@lemmy.worldhttps://www.helmet.beam.vt.edu/equestrian-helmet-ratings.html
This is a good place to start for helmets. They have the same sort of ratings for different sports so if nothing in the equestrian list looks good, you should check the bicycle list. Note that it's not necessarily current for everything but it's a good starting point.
When a person has nothing left to lose they will take chances that otherwise they wouldn't. If we weren't living in a corporatocracy, perhaps there'd be no demand for this sort of thing, but we do and there is.
You have to ask the counter guy. They're next to the muffler bearings and blinker fluid.
Cut a hole in the tennis ball, stick it on the muzzle of your AR-15 and call it a silencer. Bet you could smuggle in a number of tennis balls that way