I have to say, this is pretty color. Not the first one to do this but first mass produce that's not Russian, maybe?
http://www.thefirearmblog.com/blog/2017/12/04/tfb-review-new-remington-870-dm-magazine-fed-shotguns/
http://www.thefirearmblog.com/blog/2017/12/04/tfb-review-new-remington-870-dm-magazine-fed-shotguns/