S&W model 40 cylinder gap

Hi folks

I've got an S&W model 40 that I'd like to keep. The cylinder gap is 0.012", whcih is way too much. What are my options?

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"If cowardly and dishonorable men sometimes shoot unarmed men with army pistols or guns, the evil must be prevented by the penitentiary and gallows, and not by a general deprivation of a constitutional privilege." - Arkansas Supreme Court, 1878