chokes on 870 Marine Magnum? Anyone?

[FirstBMW]

I am looking for any gunnutz that have had chokes put on a 870 Marine Magnum. How much did it cost you?
I know that I could just get another barrel that is threaded for chokes.
I want to use the electroless nickel bbl it came with...if I can.


Anyone?

 

[FirstBMW]

I take it no one has done this.
OK I guess I will go with the swap barrel.