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06-19-2017, 01:12 AM
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Join Date: Feb 2000
Location: Phoenix, AZ
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Replacement for older FLAT-latch?
Have an old (pre?) M12 flat-latch. I'd like to get a modern thumbpiece on there, but the threaded shank looks much smaller than the retaining nut on today's latches. I happened to catch an ad for a 'Classic' re-issue for sale locally. The nut LOOKS much smaller, LIKE it may be compatible. That larger dished thumbpiece would be a much appreciated replacement. Does anyone know if it will work?
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06-19-2017, 09:37 AM
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I don't own a M12 however I do own several early Baby Chief's with a similar style Flat Latch. The Baby's Flat Latch is fastened with a very small screw while the more modern latches you want to install are fastened with a nut. As far as I know the two are not compatible. If there is an "adapter kit" or conversion Bolt I am unaware of it.
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06-19-2017, 11:44 AM
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I'm pretty sure you would have to replace the bolt in order to upgrade the latch. A newer K frame frame bolt along with the preferred latch would probably work. Could very well be a drop in fix but may need some minor gunsmithing touches.
I vaguely recall doing this for a friend who for whatever reason wanted a stainless thumb latch on a perfect functioning orginal M38 J frame.
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06-19-2017, 02:35 PM
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You will have to replace the thumb piece and a nut to fit as well as a proper bolt.
The bolt will NEED fitting. It was never a drop in part
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06-19-2017, 05:14 PM
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Not trying to hijack thread, but the M12 should be sparingly shot with mild loads and at least to me would be somewhat unsuitable to be a proper defensive weapon. Not bashing your M12, but it's a well known fact they do not stand up to repeated firing of SD strength ammo well. That is one reason to relegate it to a collectible and a seldom fired gun and so converting the Thumb Latch on it might not be all that much of a priority.
Again, not trying to ruffle feathers here, but it is what it is. There are certainly better SD S&W's out there than the fragile M12. Just my opinion.......
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06-19-2017, 05:42 PM
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One thing I've learned about J frame flat latch revolvers is to check all the frame screws after a range trip. Some, especially the cylinder latch, can work lose.
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