I just bought a remington 870 express super mag 12 ga. 3 1/2 inch. The stock is black synthetic but it is beaten up pretty bad will the stock and forearm from a normal 870 2 3/4-3 inch work on this gun? im pretty sure it would it looks the same? anyone know anything about this? any input would be appreciated i am looking at buying a new stock/forearm set maybe the advantage shadow grass for duck season. thanks guys, also im am pretty sure regular 870 choke tubes fit it any advice on that? it came with a superfull turkey choke and i need a regular improved, modified and full choke for regular shooting.