Sup guys newbie here, first post aswell. I own a couple firearms .22 Rugar LR and a remington 870 pistol grip (old as shit). Lately iv been saving for a new 12 guage pump shotty basically for home/vehicle defence. What I had in mind was a Mossberg 500, or a mossberg 590A1. Im not to sure what the diffrances are between the two so if someone could explain that would be swell. I like everything about the 500 except for the plastic trigger guard/ trigger. Its light, and, short and sweet. Whatever HD shotgun I decide to go with Id like to have somekind of retractable stock much like the "knoxxx" i think its called also with a pistol grip.. and preferably a 18.5" barrel.. If you haveany comments on the Mossbergs, throw em at me or if you have any other recommendations lemme hear um. Thanks alot guys!