FWIW single side safeties from the "Value Line" guns will work as long as you don't care about the color not being stainless.

My CS9 has one with no timing issues. I literally bought the last single side safety in the wild from Cylinder and Slide several years ago, which is when I realized that that the 908/915 safety would work fine.

If you search here you'll find some excellent posts by Fastbolt and BMCM (and probably others) on how to do the swap. It's not at all complicated.

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