you need a forend wrench that fits the 870. the same wrench will fit the mossberg 500,ithaca 37,BPS, and win 1300/1200.they are available from brownells but the cheaoer route is to have your local gunsmith do it.
you need a forend wrench that fits the 870. the same wrench will fit the mossberg 500,ithaca 37,BPS, and win 1300/1200.they are available from brownells but the cheaoer route is to have your local gunsmith do it.