Pappy348, are you talking about a 591 magazine or 581 in 22lr? If its a magazine for the 581 in .22 you seek theres a fellow on here that make great metal ones. I bet if he made some mags for the 591 they would sell like the proverbial hot cakes.
Not looking for any; the two I have for my 581 are plenty. Mine's not going anywhere, but I don't go all woozy over these like some do, or their CF cousins either. Lots of better rifles out there, then and now, like my SS 455 for instance. Only so much nostalgia room at my house.