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10/18/2009 10:00:22 AM EDT
What is the purpose of a post war relief cut in the saddle arm on a M1 Garand? Does this drop the value of a correct grade gun if this the only one available vs a uncut one?
10/18/2009 10:09:11 AM EDT
[#1]
Has to do with excess pressure from what I  have read. Mine is Uncut .I think some late model WW2 m1s had a cut oprod. Just uncut are harder to find.
10/18/2009 10:55:54 AM EDT
[#2]
I don't know what the 'saddle arm' on the Garand is so I may be way off base here.  The one relief cut that I do know of is on the op rod and it was added due to stress fractures.  Some were done post-manufacturing and some during.  I think the smaller of the two cut-outs was the former.

Brian
10/18/2009 12:57:45 PM EDT
[#3]
The cut on the op rods were made during WW11 when they found that some of the op rods were cracking due to firing grenades with the grenade blanks.  The cut fixed that problem and a lot of the rods had the cuts when they went in for re-build/overhall.

Using an un-cut rod should be fine but you can trade it for a nice un-cut one and some cash.
10/20/2009 5:20:07 PM EDT
[#4]
To be proper, most WW 2 Garands were issued without the relief cut.  However, the miliatry retroactively put a relief cut in many of the WW 2 op rods.  Types 1 - 6 (D 28296 - D 28296 9 SA)were made without the cut, and then later modified.  The Type 6 op rod(D 28296 9 SA) was used on serial numbers from approx. 3,450.001 to about  3,850,000 (end of WW 2 production).  The modified cut is a 1/4" cut, those factory made have a cut that is 5/16".
10/21/2009 1:30:26 PM EDT
[#5]
The cut had absolutly nothing to do with launching Grenades. That is a interent myth. The granade launcher had a tab that stuck in the poppet valve in the gas screw releasing any gas so the Op Rod didnt even cycle.
The 'cut" was made  just because it it reliefs the stress of a square cut that were prone to cracking

Its not  a correct rifle if it is of the era that it was issued with a uncut Op Rod
10/21/2009 5:45:41 PM EDT
[#6]
What poppet valve, on the garand are you talking about?
10/22/2009 3:23:18 AM EDT
[#7]
Quoted:
What poppet valve, on the garand are you talking about?


Its in the gas screw.


The "early" screws were solid with a single slot
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