Search:

I have a 11/87 smooth bore I just added a rifles choke to it, and it shoot great, better than it did with a imp cylinder or other slug OK chokes
I am guessing the OP< wants sights on the barrel,...

thats honestly easy to find, about as easy as finding a person that GOT a DUI in a bar LOL

here you, buy a 870, and then a barrel/ use or they DO make new one's still?
...

Armslist.com
guns america, and like web based stores, then all you need is a local shop to be willing to accept and do paperwork when it gets there
shouldmn't be hard to find, they made a TON of...