... I'm looking to add a third shotgun to the stable , for an additional location. I am thinking Mossberg 500. My question is, if I get a Mossberg 500, and I want to keep the price down, can I get any model 500 and install the $56 6-position stock and buttpad, I think made by ATI? I just want a 18.5" Mossberg 500, maybe even the cruiser/mariner/camo ones that come PGO in the JIC case, and attach the pistol grip/adjustable stock.. Is there a specific model of the 500 I should be lookin for? And recos? Keep in mind I have a brandnew Mossberg 930 SPX as my primary and favorite blacktikal boomstick and my Benelli Supernova 24" pistolgrip for an additional/extra one...I figured anything the Mossberg 930 can't do the Benelli can... and now I want a less expensive shotgun to add to the stable for utility use.. But if I can pick up a Mossberg 500 for a little bit more than $300 at dicks and add that stock, I'm gravy, right? Thanks for the help. And let me add, I obviously would love to add a Benelli M2 Tactical, always wanted one ,but it's $1200. and honestly I don't know if I really can justify it if I even GET that money, having a 930 SPX 18.5" (Conventional stock) and the Benelli SN 24" (SteadyGrip Pistol-gripped stock) but a Mossberg 500 seems just about right. EDIT: And just for kicks, if I was nuts enough to get one of the 500s with the crazy muzzle breaks, could the adjustable pistol grip stock go on those? Something about those crazy breaks appeal to me in a wierd sort of way.