Mossberg 590 Retrograde with S&J hardware +1 cap

Hello, selling my Mossberg 590 Retrograde. It has a tacstar side saddle and a S&J hardware +1 cap on it. I'll be including the S&J no-jam follower and spring the cap came with, but they aren't installed. I couldn't find information on how to do it myself and S&J never answered my several emails asking about a tutorial.

I'm including the case in the pics and 6 unused 12g snapcaps. 

Has a few scratches here and there but runs flawlessly even without the S&J spring. Still has the stopper in the mag tube so it runs 6+1. 

Can ship at buyers expense or meet in Dorchester Ontario area.