Whelp, allow me share some history.
Back in the day, before JFK was shot, but Cold War going on, and later not knowing what gun laws were going to do with GCA of '68 and all...
Single shots in shotguns and rifles, including .22 rim-fire were always "set back".
I mean "If" the Gubmint said civilians could not have anything like Police or Military had...
Which history has shown us has happened...
There goes Win Model 97, 12, Ithaca 37 and Rem 870...12 gauge repeating shotguns for starters.
Mentors and Elders had already been through a lot of "Life Stuff" like seeing what the peoples of countries had/did not have in the way of firearms, being in Conflicts.
Tornadoes Ripped through where I am. No 911, and Rescue folks tend to run to cities. Rural folks took care of their of their own.
Canned Goods, Water, blankets, candles ...etc, and Single shot guns to pass out to keep looters away.
See, some tornadoes took the guns these folks had.
Katrina Folks got some single shot shotguns, including some that "come up" and relocated, and stayed with others.
This "being ready and prepared" is not a new thing.
Civil Defense barrels with stores in buildings with CD yellow and black signs were common when I was a kid.
Just made sense to have the simple single shot shotgun, .22 rifle, ammo, simple revolvers, ammo, ways to reload ammo with reloading supplies in a barrel too.
I mean other countries were doing this.
Break it down to the most simple, proven rugged design.
WE prefer 20 ga in a single shot, and the .410. Youth size means a smaller person can use if need.
Like I said, this was going on before I was born in the mid 50's.
Mentors & Elders were some pretty smart folks...