I'm looking for info on which exact model the U.S.M.C. uses. I know It has the metal triger guard, but what else, do they use ghost ring sights,rifle,bead, does it have the heavy barrel,etc??? And does anyone know who sells M590's for a good price?? And whats the price range?(I know it's varies quite a bit btwn models) I have never seen one of these in my armoury so I would't know, and I've been out of the U.S.M.C. for 5-1/2 sad years now. Any help is appreciated.
Thanks

ive seen very few in the army, and i cant quote to what the marines use. but the modles i have seen are the 590a1( impoved cylinder bead sight) and the other 590 vervison?? that had improved cylinder, ghost ring sight blade front. dont know what the price range is look around the net,,,might give you  some ideals.