Here is a prime example why citizens should be able to own sawed-off shot guns (more appropriately short-barreled shotguns) or a SBR without any restrictions, tax stamps, etc.
When my mother was alive and living alone, I was concerned for her safety. So I went and bought her a side-by-side derringer chambered for .410 (or .45 ACP, can’t remember teh make), which I loaded up with .410 buckshot for her. It was a nasty little close-quarters weapon that I wouldn’t want to face. It was the best of both worlds...