Beretta 1938

In a pile of Soumi 31 parts my late boyfriend purchased, I found 3 stocks, and barrels I couldn't identify at first. I finally came across the name Brertta on a barrel, and a little internet search told me they were parts from an Italian 1938 submachinegun. I found there were 3 issues with different barrel lengths, but I don't know how to make such a measurement. I hope to sell them later to pay bills, and wondered if they have any value. Thanks for you help Rachel

Hard to say. They don't wear out very often, even with lots of full auto rounds through them. I'g guess US$50-150 range.