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Old 02-06-2020, 01:06 PM
geeollie geeollie is offline
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Default J frame hammer exchange

I am considering a 351PD and I want a bobbed hammer.
But, I do not want to cut my own hammer.

I have a hammer for a 642/442 Centennial.
Will a hammer from a 642/442 work on a non-Centennial model?
Both are J frame and have mounted firing pins.

To ask further, are all J frame hammers (frame mounted firepin) compatible with other J frame models if of current production?
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Old 02-06-2020, 09:16 PM
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Yes, but the Centennial models are double action only so you'll lose the SA function. Unless you don't care.

The Bodyguard hammer will do what you want, but still have a SA mode. And you can trip the spur further if you want.
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Old 02-07-2020, 10:46 AM
geeollie geeollie is offline
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Thank you for the reply.

I had not considered the 38/638 humpy hammer. There are some available for not much cost. Thanks.
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Old 02-07-2020, 04:28 PM
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Here's what it looks like in a Mod 36.

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Old 02-07-2020, 05:32 PM
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Thank you for posting the picture. If the frame mounted firing pin hammers are shorter than the ones with the hammer nose, that may make a better "bobbed" solution.

I have a model 65 with a factory bobbed hammer and it is shaved much more, very smooth and has little if any ability to snag. That is what i am hoping to achieve.
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Old 02-07-2020, 05:46 PM
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You'll be able to do that. In fact bobbed hammers are not that hard to find online.

Just make sure that the base of the hammer junction to the top of the main spring strut bar are compatible. Early ones have a ball and later a forked junction. Although struts are cheap and easy to find and change to match a hammer you buy.
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Old 02-07-2020, 05:50 PM
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Thank you for this tip.
This is a great forum.
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Old 02-07-2020, 07:57 PM
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if you lighten a j frame hammer to much it may not work .you can lighten a larger k/n hammer with out issue. that is why a bodyguard hammer has that extra lump of metal added
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Old 02-15-2020, 09:53 PM
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Why not just buy an extra 3541 or 637 hammer, bob it then put the original hammer off your 351PD in your parts supply in case you ever need to switch back.. The 638 hammer is ugly when used on an exposed hammer model.
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Old 02-15-2020, 10:32 PM
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I will probably use my Centennial hammer.
Thank you for the suggestion.
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