The brand "Uncle Mike's" sells what you are interested in. Many Walmarts carry the product. LGS's would as well. Should be an easy score.
Be a productive member of society, but be prepared.
G23(3) Carry, G19(4), Advantage Arms .22 Conversion, Ruger P89, Ruger Security Six .357, M&P 15, Ithica Model 37, Winchester Model 24, Ruger 10/22