Just to throw an anecdote in here. I had a customer drive down from Los Angeles to meet up with me to do a receiver extension swap on his M1014 last Thursday. Well upon installation, I noticed that the collapsible stock was extremely sloppy on the extension. Like it would rock back and forth around 6 - 8 degrees. It would likely collapse without pushing the unlock button under recoil. We tried several stocks, the same issue was present on all of them. The notches appeared to have been milled improperly. I've swapped like a 100 of these over the years, and have never seen one do this before. Probably more of that rushed Benelli quality we're seeing lately.
Naturally this extension was bought from Benelliparts since they get them in more than anyone. Fortunately I had another extension on hand to get the job done right, and the bad one was sent back with the customer. Since the customer happen to live near where Benelliparts is located, the customer met up with Antonio in person who was happy to swap the extension out. He brought several of them for him to choose from to send back to me.