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S'G' experimented with different height front sight blades. These variations in height were marked with a single number on the outside.
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12-05-2010 09:27 AM
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Send in the data sheet to the Carbine Club. I think you will get confirmation on your safety. A friend of mine told me about one he had with only imporperly marked safety. I told him he should leave it alone for now. We later found one in the Carbine of the month with the same safety. Bill
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Originally Posted by
Wulf
S'G' experimented with different height front sight blades. These variations in height were marked with a single number on the outside.
I've heard the same thing and that the numbers ran from 2 to 7 - also that it was done after installation of the sight, and was to aid those those targeting the rifles in filing of the front sight blades. Does anyone know for sure if the 2 represented a sight that needed to be shorter, or was that maybe the 7? My sight, marked with a 7 on the left base is really short at around .2 inches, but I believe someone has done some more filing on it since 1943.
---------- Post added at 12:09 PM ---------- Previous post was at 12:04 PM ----------

Originally Posted by
Maniac
It's been a while since I dug my S'G' from the back of the safe but I'll do so when I get home from work tonight. Although I don't have anything about a '7' on the front sight it's possible there is one and I neglected to note it on the informal data sheet I made out when I first bought the carbine. I have the safety listed as a type II (plain face) and the 'IN' marking is on the inside.
Mikey51 - thanks for the photo of the front sight, is it on an S'G'?
Do you know where on the inside they usually put the marking? I can't find anything inside on mine. I'm curious too about Mikey51's sight - another "sidewards N" variation? On an S'G' ?
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Mikey51's is an IPN I believe
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Originally Posted by
Wulf
S'G' experimented with different height front sight blades. These variations in height were marked with a single number on the outside.
It was Irwin Pedersen not Saginaw Gear that initiated the front sights of varying heights. IP precut front sights down from the standard height to one of seven dimensions and stamped a corresponding number on the left side of the sight. When the carbines were targeted they were done so without a front sight. Instead they used a dummy fixture which gave them the height required for the front sight blade. After targeting the appropriate pre-sized front sight was installed. The IP pre-sized front sights ranged in size from 0 - 8, with 0 being the tallest and 8 being the shortest. The #1 sights were the standard height of .795" from bore centerline. When Saginaw Gear took over the IP facility they abandoned the practice in favor of the standard method of firing the completed carbine, then filing the front sight to the appropriate size. Saginaw Gear did use some of the left over pre-sized front sights but they were targeted in the standard fashion.
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Now I know why the post on my S'G' is so short, but wonder how they knew to put on one marked "7" before targeting - maybe they were still using the sight fixture at the time? It's beginning to sound like the "N" and the "sidewards N" are both correct for the S'G' also, since mine has the leftover IP sight and Maniac's is probably the later version. - Bob
Last edited by USGI; 02-23-2012 at 10:58 PM.
Reason: Removed a "Thanks" that should've been listed above the post.
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DECEASED
Brian is right. The PN sight has a 6 on the left side. An all IP part gun except for an RMC handguard that I can't explain. I have been trying to attach a pic but the system won't work tonight. Will try again tomorrow, Mike.
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Here you go guys. The side of the PN sight on a 1771XXX. Cheers. Mike.
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Robert Irwin made stocks were commonly found with the green number stamps inside the stocks.
Inland did the same but their ink color was different and thought to be a dating system (Julian).
Irwins numbers were thought to be part of the production codes/ steps/ inspections... etc.
Charlie-painter777
Here are 2 Type II Hi-woods made by the Irwin Bros....
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