I'm contemplating running an RMR on either (or both) my Remington 870 or the Beretta 1301. I like the RMR as it has a nice low profile. Is there anyone running this setup? If so, do you run the optic closer to the rear or more to the front of the rail? What size dot do you prefer? Also open to other suggestions regarding optics on the shotgun. As a point of reference, the 870 has Vang Comp ghost ring sights and the 1301 is the Tactical version with Beretta's ghost ring sights.
Mike