590A1 Differences between Mossberg 500 and Mossberg 590 and 590A1 Moss 500 25 Jul 2016 0 comment The Mossberg 500 shotgun is a great starter weapon if you’ve never used a Mossberg shotgun before. But there are a few differences between the…Continue Reading Related Posts Tru-Glo Glo-Dot II Shotgun Sight for Mossberg 500/590