Flea bay often turns up 5A's and the mounting hardware but it can get pricey as they along with others like the centrals, 5C etc are commanding good prices but sometimes you can get them a central around $130/USD the PH 5's will set you back around $200-225/USD (Going off current adds) best to try gun shows or rifle clubs that may have elderly members whom are quiting the sport as you always collect a few sights along the way.