I'v had one for a few years now, mossberg 500 parts do interchange, when I ordered the 18.5" security barrel for mine I ordered it for a mossberg 500. Been a pretty good gun so far, its a workhorse. One good thing if you plan on using it for security is the fore-arm does not overlap the action so no chance of getting stuff caught in there like on some shotguns. Its been reliable for me with 3" buckshot magnum or 2 3/4" 1oz 6 shot.