With all of these big corporations its really hard to tell what is going on ...in shotguns, heavy trucks, cars, etc .....when it comes to their subsidiaries or sister divisions..
Beretta International ?? - is the parent for Beretta, Benelli, Franchi, Stoeger ..etc ....and just because they are all under one parent doesn't mean they will all use the same parts. I've only looked at the internal bolt of one Franchi at the club / and it was similar to my Benelli - but it seemed a little lighter and a little different - but maybe within the 20+ models of Benelli there are differences too ( I don't know ..).
Same thing in heavy trucks as an example - which I do know .... Peterbilt and Kenworth are part of the same corporation ....Paccar Inc. There is one corp purchasing dept / but there are all kinds of parts that are proprietary to one division and not the other. The trucks look similar ...but that is all gingerbread ( when you get inside it .....the frame rails are different thicknesses, the cabs are riveted and welded very differently, different companies make the wiring harnesses - and to different specs, even the battery cables are different ....hard to say one is cheaper than the other ...but they're different ( tradition, ego, ?? ) ....
Same on GMC corp ( Cadillac, GMC, Chevy, etc ), Toyota Corp ( Lexus, Toyota ..)...
I'm sure my buddy Zippy is right on Franchi using the Benelli patent ....but it doesn't mean they use parts from the same suppliers or out of the same bin ...maybe they do, maybe they don't ...