I'm a man of simple, old-fashioned tastes:

Bring back the K32 or the same gun in stainless. No lock.
Re-issue the Model 64 standard 4" barrel or the 10-5, sans lock.
Produce a top-break .38 S&W or .32 Long with hard rubber stocks, and don't even think about a lock.

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Oh well, what the hell.