sw 3000 & rem 870 parts interchangeablility?

[HighValleyRanch]

Will the after market stocks for the 870 fit on the smith 3000?

Will the mesa tactical side saddle fit the same pins on the 3000.

I heard many things are interchangeable between both these as the howa copy is pretty close.

Need an extension tube for it as well.

[Dfariswheel]

Some accessories "may" fit, but I don't think stocks will without alterations, and magazine extensions DO NOT.

The Howa/S&W/Mossberg 3000 is a close but NOT exact copy of the 870. No internal parts will interchange.
I think that Choate may still offer an extension that will work. Email for info:
http://www.riflestock.com/