H&R Revolver mainspring guides

80sDweeb

January 15, 2015 16:34

I see on Numrich that the part number for the mainspring guide for H&R revolver models 532, 623, 632, 633, 970, 622, 666, 922, & 923 revolver, is different from the mainspring guide for models 586, 649, 650, 660, 676, 686, 949, 950, & 976. Part numbers 276950A and 276950B.

Does anyone know what the difference is between these parts? Is one longer than the other? I'll have to call them up, if I can't find out from someone else. Can't find the one I need, wondering if the other one will do (I have a 949 with no mainspring or guide - came to me without them.)

Thanks!
Scott in Brighton NY

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  charliemeyer007

  January 15, 2015 16:57

  http://www.gunpartscorp.com/Manufacturers/HarringtonRichardson-33274/Revolvers-36449/949-38115.htm?results=All
  
  Part 34A
  
  It's been a long time since I did one, but there could be 2 or 3 iterations of the parts. It is how they hook to the hammer and the frame. I think the plastic head is a cheaper made version of the metal head one and has a lighter spring.

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  80sDweeb

  January 15, 2015 18:33

  From what I've read, the plastic ones are original old stock parts, so the plastic isn't any less likely to break than the original. That is why the metal ones are preferred. I'm wondering what's the difference between the assembly for the 949, and for the 922. Their website uses the exact same photo for both, so I can't really tell what the differences are that way. I expect that one could be shorter, but if I'm lucky, one just has a different seat (which I could easily fabricate.)
  
  Scott in Brighton NY

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  buttplate

  January 16, 2015 11:32

  80sDweeb,
  Part numbers 276950A and 276950B are exactly the same. Numrich places a letter after the part # if it fits more than one application. Take and put 276950 (without the letter) in the search box, and you will see what I mean. All H&R plastic headed mainspring guides are the same. Believe it or not, the plastic headed spring is 2 coils longer than the metal headed one. This is because the metal headed guide has a shoulder further down than the plastic headed one.
  buttplate

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  80sDweeb

  January 27, 2015 19:09

  Thanks, Buttplate! That is very good information, and will be useful to me for many other guns, as well. I ended up getting a plastic part for cheap, which is OK because I needed it to get some timing issues worked out on this gun. If it breaks, I'll make a metal head for it, as I've seen others do on YouTube.
  
  Now to get it working reliably!
  
  Scott in Brighton NY

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