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Discussion Starter · #1 ·
How is a NM Op Rod (if there is such a thing) different from a standard Op Rod? I have read that there is a NM Op Rod Guide but I am not certain how an Op Rod would be a NM.

Just curious... I am slowly upgrading my SA Loaded M1A to as close to NM specs as I can... as a project... and I think this area is my last area that I need to look at...

Your help will be greatly appreciated.

Aloha,

Tom O.
 

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Tom, I don't believe there is such a thing as a NM op-rod. The NM guides of course, you are familiar with. I've been told that the "best" op-rods are TRW, SAK, and SA, but per Kunhausen, the only op-rods he ever knew of that failed were H&R. Ted Brown of Jacksonville, Oregon, a very knowledgable M-14/M1A gunsmith has told me that the SA op-rods were actually manufactured from two pieces which are then welded together, while the TRW are forged as a one piece unit. I don't know if the SAKs are made as a one piece unit or originally two pieces welded together.
 

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Discussion Starter · #3 ·
Thanks for the response Chuck...

I am slowly modifying the loaded and the NM Op Rod, if there was one, would have been the last thing to order and install... I'm going to see how this SA op rod works out, with the NM op rod spring guide in, the op rod properly aligned, the action is SUPER smooth...

I also got a TRW op rod from CMP, it looked like it was used less than the op rod on my rifle now... :lol:

It been fun and a learning experience in trying to make my loaded NM ready... I done everything, including the mods on the stock, to make it NM ready except the bedding... It was FUN!

Thanks again, Happy Holidays!

Tom O.
 

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tom:
chuck is correct the drawings for 7267064 sheets 1 thru 3 dated 17 sept 54, allow for 2 configurations solid one piece or welded section which breaks down to pn 7267064-1 handle and 7267064-2 tube. one also comes with a vent hole in the front and another does not winchesters rods do not have the vent hole there was never such a thing as a national match op rod for an m14 just the m1 garand. the oprod spring guide(orig number 7267027) as per the amu manual for match conditioning shows 2 drawings for such a device also the usmc manual shows a detail drawing on how to produce one . jeff
 

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There ya go pullin book on us again Jeff :lol: :lol: :lol: By the way....Jeff is one of those guys that has a photographic memory....he can spew out part numbers on all kinds of stuff..... :D :D :D He's definitely an asset to us all! Thanks, Jeff
 

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Discussion Starter · #6 ·
Yes Hawk, I agree... What an asset... :lol:

Great to hear from ya, HueyGunner! :lol:

Thanks for the input y'all.........

Happy Holidays!

Tom O.
 

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dighawaii
Rifle SharpShooter


Joined: 29 Aug 2002
Posts: 152
Location: Hawaii
Posted: Wed Dec 18, 2002 10:57 pm Post subject: NM Op Rod?

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How is a NM Op Rod (if there is such a thing) different from a standard Op Rod? I have read that there is a NM Op Rod Guide but I am not certain how an Op Rod would be a NM.
Tom,

It's suprising but a lot of people call it a N.M. Op Rod when they mean N.M. Op Rod "Guide", which is attached to the bottom of your barrel. Perhaps that's what you are seeing?
 

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Discussion Starter · #8 ·
Hi Maze:

I was thinking that there might have been a "special" NM Op Rod... maybe polished or built to different tolerances... and I did not see anything about one in the Kuhnhausen or Duff books... so I was just asking to see if anyone else might have any idea on it...

Speaking of Op Rod Guides, it appears that there is nothing particularly special about the Op Rod Guides and the NM mods is mainly on how it is installed (tighter on knurled edges, etc.)... Is there more?

The whole thought process surrounded... Is there a NM Op Rod and Op Rod Guide (mated) for even tighter tolerances and repeatability... but I surmise that there is none... unless others have ideas that they can share...

Aloha and Happy Holidays! It's getting close to Christmas!!!

Tom O.
 

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Do you guys think that polishing the inside of the oprod ,where the spring fits, and the oprod guide, it would performe smother? You know, like blueprinting raceing engines. Probably other parts that have bearring like surface too. :idea: :wink:
 

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Tom,
The guide on my Super Match is wider than a standard. almost twice as wide. The one on my N.M. is also a bit wider. I'll bet someone out there has more info on this? Maybe on our sister site?
 

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yo maze:
the reason is you have the heavy match barrel which comes with the hefty oprod guide which is pinned to the barrel this feature provides the oprod more bearing surface to ride on also this provides better support.
what you are referring to is pn 9349846. which fits on configuration barrel 9349847 it is retained by pin ,ms51923-291. the medium barrels are knurled as well as the light the heavy is not from what i have seen.
jeff
 

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yo maze in commieforniastan:
the guide you are referring to is pn 9349846 attached to heavy barrel 9349847. no knurling on this big baby.
the big wider guide provides more bearing surface for the oprod to travel on thus smoother travel too and fro. and to my missisippi friend do not polish out the insides of the oprod it should just be greased you dont want it to rattle,( harmonics) remember less play the better. just grease up that puppy. jeff
 

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Discussion Starter · #13 ·
Thanks Maze and Jeff...

That is excellent information... I think I might need to get a NM Op Rod Guide and Pin to see how it might improve my setup.

Merry Christmas!

Tom O.
 
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