I haven't been in Ray's in years. They used to have EVERYTHING, but was the highest priced place in DFW. Also, be sure you have your concealed weapon with you. Ray's is in an area where you may not want to hang out after dark.
There is Bullet Trap in Plano, McClellands in Dallas, The Armory in Mesquite, Bachman Guns in Dallas, Wells Brothers in Plano, Elk Castle in West Ft. Worth, and of course Sportsmans Warehouse in Lewisville. There are others too, but I can't think of them off hand. Good luck.