I mostly agree, and I would like a short carbine much mo' betta than an AR pistol. I think all of the SBR and SBS laws should be struck from the books. All of the 10-12ish" Auto & Burglar shot pistols, 12" and 15" Marble Game Getters, 12, 14 and 15" Winchester trapper models (Special Short Carbines if you want to get technical about it), H & R Handy Guns, etc. were outlawed for no good reason. I read that the 18" Marble Game Getter was re-legalized 5 years later, even though it was too short to be a shotgun or a rifle. None of these guns were "the preferred weapon of criminals" as the antis like to say, any more than SBRs are today. But the ATF says wallet holsters are AOWs too, so don't expect them to relax their interpretation of the law. The law has to change
beyond their interpretation of it.
Too bad I can't buy a newly manufactured 12" Game Getter. Wikipedia says, A third production model is currently produced by Marble Arms. It is similar in appearance to the Model 1908 and features a .22 LR rifle barrel over a .410-bore shotgun barrel. The only barrel length offered is 18½". But I can't find it anywhere. Me and Teddy Roosevelt used to have solid brass Marble compasses.

I didn't know how popular their equipment was outside of Michigan, with the U.S. Army, British army, etc. After 40+ years I still have my match safe and it will definitely outlast me. I bought one of their slot fillers for my 10/22 from Brownells when I took the rear sight off. They still make sights, lots of tang sights, a full buckhorn, and even a tritium bead for shotguns. The last one's new to me. I'll have to look some more to see what else I didn't know about besides that and the 28 patents they had. I thought they quit making knives but they're on a separate site. And I see over 200 models at SMKW, including a version of the #3 safety axe.
http://www.marblearms.com/about.html https://marblesknives.com/ https://www.smkw.com/catalogsearch/result/index/?p=1&product_list_limit=60&q=marbles