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I bought an old M&P from about 1927 (SN 5786xx). Got it for a bargain, mostly because some numbskull tried to do a trigger job on it and nearly removed the SA sear notch on the hammer with a file or stone. See first photo below.
The odd thing about it is that it seems to have an unusual hammer configuration.
Instead of the DA sear fitting into a slot in the hammer, there is a boss on the hammer that fits into a slot in the DA sear. Apparently this style of hammer is common for an N frame? See the second photo below.
I tried installing one of the style with the slot in the hammer that the DA sear fits into and the hammer stud isn't in the right place. The distance from the hammer stud to the "backstrap" of the hammer is too short with that style of hammer. See the third photo below with the arrows marking the dimension I am referring to. That dimension is approximately 0.87" as best I can measure it.
The other odd thing is that the "backstrap" of the hammer there is a rollmark that says "REG. U.S. PAT. OFF." The rollmark is oriented to be read from the left side of the revolver. See the fourth photo below with the roll mark outlined in red.
I think I've seen that rollmark on the hammer of a Registered Magnum maybe? On the other hand it doesn't have the concentric grooves on the sides like a Registered Magnum hammer.
So what have I got here? Is this an original hammer or a replacement? Anybody got one for sale that will fit this old revolver? Maybe even a hammer & trigger set?
The odd thing about it is that it seems to have an unusual hammer configuration.
Instead of the DA sear fitting into a slot in the hammer, there is a boss on the hammer that fits into a slot in the DA sear. Apparently this style of hammer is common for an N frame? See the second photo below.
I tried installing one of the style with the slot in the hammer that the DA sear fits into and the hammer stud isn't in the right place. The distance from the hammer stud to the "backstrap" of the hammer is too short with that style of hammer. See the third photo below with the arrows marking the dimension I am referring to. That dimension is approximately 0.87" as best I can measure it.
The other odd thing is that the "backstrap" of the hammer there is a rollmark that says "REG. U.S. PAT. OFF." The rollmark is oriented to be read from the left side of the revolver. See the fourth photo below with the roll mark outlined in red.
I think I've seen that rollmark on the hammer of a Registered Magnum maybe? On the other hand it doesn't have the concentric grooves on the sides like a Registered Magnum hammer.
So what have I got here? Is this an original hammer or a replacement? Anybody got one for sale that will fit this old revolver? Maybe even a hammer & trigger set?
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