Found a local model 25 that has been converted to DA only. What does it take to make it back to its original condition of SA and DA? Any idea as to a cost? Thanks in advance.

Todd

It will take a replacement hammer and/or trigger. No way to know without getting into the lockwork. It may not have been converted, just push-off developed to the point where the gun simply will not cock. This does happen.

Depends on how it was converted to DAO. If just the hammer spur was removed, you just need a replacement hammer. If it’s a factory DAO or if it had the internals modified, that’s a whole different matter and beyond my knowledge.

Strangely i ran into this recently Found out that custom grips from Thailand were too tall behind the grip horn that yhe hammer could not be cocked for S.A.fire D.A/worked great .the grips were just tall enough that the hammer could not be pulled back enough to allow the trigger sear to engage the hammer .Almost but-----

Yes, as noted above "push off" is a problem that can develop in a S&W revolver, where the cocked hammer can be pushed or jarred off the sear causing it to fall. It's something you want to check for when buying a used revolver.

Unfortunately some people regard the "fix" as removing the hammer spur to prevent it from being used in SA mode. This prevents the problem from becoming an issue, but it's not really a fix of the underlying problem.

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I've also noted many S&W revolvers that have very little clearance between the end of the spur and the grips, and in some cases after market grips can prevent the hammer from reaching the full cock position. In that case, the fix is easy - replace the grip, or relieve the grip or hammer to provide clearance.

How do you check for that?

Cock the unloaded gun as you would when firing SA. While not touching the trigger, with your thumb, put pressure on the back of the hammer spur. S&W uses the term "nominal pressure"....whatever that means. The hammer should not fall.

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Ret. LE, FA Instr, S&W Armorer