Not an area that grabs my attention but sort of an answer.
There are some collectable/historical arms that could fall in these catagories. In addition to some of classic shoulder stock optioned pistols made into the early 20th century, there's the Air Force survival rifle and rifle/shotgun M4 and M6. These are breakdowns with 14" barrels.
Side note FWIW. The term 'law' can be used a couple ways. So its a context thing.
'The Law' usually is used to described all three parts of law that can be applied in a proceedings.
1 The legislation itself. This is also sometimes called 'the laws'.
2 The rules and procedures for applying the legislation.
3 Case law and related guidance.
Whomever is charged with applying the legislation has to so under some consistant manner. Hence the rules and procedures.
So depending on the situation law can mean all of it, just the written parts, or all of it.