Hi all, have been looking at some info about Mossberg's Flex System. It seems the company are now starting to sell the adaptors so that owners of older 500's etc can convert their shotguns to the Flex system. Have many people on here had a 500 Flex for a couple of years? Anyone shot it regularly at clays? How has it held up after hundreds of rounds, week in and week out? Any discernable wear at all, or still as tight as day one? Seems like a great idea if your wife or youngster wanted to shoot occasionally with your gun, as they could just get a stock length that fitted them and swap it onto your gun when needed.