If you are sure the SA cocking notch in the hammer is not damaged (untouched), trigger replacement may be the way to proceed. Examine the cocking notch in the hammer and the trigger bevel with a magnifier.
You may, however, be able to salvage the existing trigger by re-sharpening the bevel at the proper angle. If you have the proper tools (stone), using the proper technique, you can do this on the bench top.
To eliminate other possible contributors, the first thing to check, if you are capable of doing so, is to make sure the mainspring strain screw is tight, and has not been altered. Also examine the rebound slide spring. Sometimes incorrectly referred to as the trigger return spring. If this OEM coil spring has been cut, or an aftermarket spring has been installed, this can contribute to the push off condition. Restoring the proper spring/spring tension, and/or re-sharpening the damaged trigger could restore function without the purchase of new parts.
I believe any current production, centerfire, k-frame MIM hammer will work in your gun. Keep in mind the hammer may need to be fit to your particular revolver. Hammers are not considered "drop in" parts. To verify compatability, you could contact S&W Customer Service. 1-800-331-0852
OEM part numbers are as follows:
MP spur width....29364
.365" spur width....29365
.500" Target width.....29366
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Ret. LE, FA Instr, S&W Armorer
Last edited by armorer951; 11-26-2016 at 10:42 PM.
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