Nice set up. The Mossy's are awesome.
I just redid my Rem 870. It started out as a 28" bbl Walmart special. I then purchased a 18" police barrel, changed out the fore end to Choate that included a rail to mount my Tac Light. I was not happy with the fore end set up because when I fired 00 buck I would cut up my hand on the rail.
My current configuration is a Choate synthetic stock w/pistol grip and collapsible stock, an extended mag (6 round mag + 1 in the chamber) and a rail set up that attaches to the mag tube for mounting my TLR-1. I have not had the time to take Pic's (I know, no pics, it did not happen). I will post as soon as I am able to.