I just bought a CZ 457 in .22 L.R. for competition and for the life of me, I cannot find any Magazines. I need at least one more five round and three ten round magazines to compete. Are there any other .22 L.R. CZ magazines that are compatible for my 457? Every place I have tried advertise, but do not have them in stock and will not back order. I WILL take used ones if anyone knows where they are available.