S&W use to offer a conversion of TDA 3rd gen pistols to DAO. But as they are trying to end 3rd gen service and terminate interest in 3rd gen pistols (in order to attempt to generate interest and sell the plastic guns they produce today) I don't think they will still do it.

Since the 5906 was capable of being converted I believe the 3906 (same top end) is too. Good luck! Hope this helps! Regards 18DAI

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