Adjustable stock for supernova

[Asmodeous]

So I have been wanting an adjustable stock for my supernova since I got it several years ago. It is just a little too long for me but I can manage. Also when I take friends shooting, some have much shorter arms and adjustable stock would be just the ticket (yes I tell them to buy their own, no they don't listen).

I was looking around and saw the M4 has an adjustable stock and looks JUST like the adjustable stock for the supernova which we can't buy here. Promag now apparently has an all USA made adjustable/collapsible stock. I am wondering if the M4 part will bolt right onto my supernova ? I know the stock from the supernova and the MR1 are completely interchangeable. Most of Benelli's stocks look exactly the same so I am wondering if that is the case here.

I looked up the part number for the supernova recoil tube and the M4 recoil tube and they are different, but close. The supernova's is 049D and the M4's is 049J. I am wondering if their OD, notches and threads are the same. If they are the parts should interchange no problem. I tried calling promag to ask but they claim they are so busy orders will take 6 weeks to ship and they will only answer your questions by email usually in a day or so....

Does anyone have both and have time to take some measurements with a measuring tape and a micrometer ? Or do I just use this as an excuse/justification to buy an M4 before CA outlaws it too..... ?

[Vertigofirearms]

I have both pairs; and a 1014 stock will NOT be compatible with the Supernova. Vice versa will work (hence my project below). But I HIGHLY recommend you refrain from interchanging the stocks.

Get the Urbino stock.

[Asmodeous]

Can you elaborate a little more as to why the adjustable stock from the M4 wont fit the supernova ? Could I simply swap the 049x spring recoil tubes to make it fit ?

Why do you recommend I not try to get an M4 adjustable stock and fit it to the supernova ?

Looking at the exploded diagrams in the owners manuals again I see that the supernova has both a stock assembly tube and a spring recoil tube. The stock assembly tube is what the stock mounts to, not the spring recoil tube as I had initially thought. The M4 diagram doesn't show this piece. Perhaps I misunderstood the M4 exploded diagram when I was looking at it last night ?

[Vertigofirearms]

1.) How the 1014 pistol grip is held in place is completely different than the supernova.

The 1014 pistol grip is held in place with friction and the end of the trigger guard; whereas the Supernova pistol grip has an independent threaded ring and two studs that protrudes into the receiver to prevent the grip rotating out of place. Now I don't have a Supernova, (still in Jail) but I am almost certain that the 1014 pistol grip will just rotate out of place with ease. And if you use the Supernova pistol grip with the combination of the 1014 stock, the stock will just run into the left corner.

2.) It will be a pain to remove the tube from your supernova.

3.) urbino will be cheaper and painless.

4.) WHY switch from 5 pos to 3 lengths of pull????