Yah, stupid of me!
Somehow in my haste I had in my pea brain yet another even shorter variant, but all of the carbines are Moschetto models. (What's the plural of Moschetto?) My only "book" dedicated to Carcanos is a first (only?) edition Hobbs, and it's little more than high school term paper with drawings and one low resolution photocopy photo stuck in loosely. Still useful and was never intended to be an "end all, be all" reference!