I'll answer my own question. You pull on the front of the forearm and it should detach from the barrels allowing barrel removal. Mine was seriously stuck. Its off now.
Best left to a gunsmith
Start with gunpartscorp.com - they sometimes have Hopkins & Allen parts
20,000 240's between 1942 and 1945. Originally had a tenite stock and forearm
You will need to provide a DETAILED descripton of ALL markings, gauge, barrel length, forearm, butt stock, etc..
Best left to a gunsmith
Requires in person examination.
Remove buttplate. Use a socket extension and rachet to unscrew the stock bolt (it's in that hole in the center of the butt)
Remove stock from shotgun
Perazzi shotgun stock forearms are not interchangeable. Currently Perazzi is in its fourth version of forearm design. These new style latches have two Allen screws in the rear of the forearm iron. Old style latches do not. There are three versions of old style forearms. The width of the wood between the metal of the forearm latch and the rear of the forearm iron differs with each of the three old styles, as does the length of the metal latch itself and its width.
Remove the forearm stock by pulling from the front down(It pulls hard). On the underside of the forearm stock is your serial number. Go to; Diamond Gun Smithing on the internet and look up your serial number. If you find models; click on each model until your serial nuber appears. Example; Serial number 263xxx=Flues model and made in 1915. Good luck and keep that really super shotgun
Best left to a gunsmith with the proper tools.
Best left to a gunsmith