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Old 10-20-2005, 05:57 PM   #1
 
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New carbine owner with questions.

I hope this picture I am trying to upload comes out OK. This is my (new to me) M1 carbine. I just took it apart this evening, and I have some questions.
What is the W on the sear, the IH or HI on the hammer, N on the trigger guard, and .U. on the bolt. The receiver is a Sag with an Underwood barrel. Tell me if I took it down right. I took the action out of the stock then I took the op rod spring and guide out then I removed the op rod and bolt then I pulled the hammer spring and rod out ( bitch to put back in) then I pulled the pins for the hammer and trigger guard. Cleaned it and reversed the process. Is that how you are supposed to do it? $450 with 9 extra mags. It's in pretty good shape. Non import. Since this photo, I have put the sling on correctly, for those of you who noticed.
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Old 10-20-2005, 06:15 PM   #2
 
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Looks nice. the letters are manufacturer codes.

W Winchester
I Inland
B IBM
U Underwood
N National Postal

etc...

Your rifle is a mixmaster, but that is ok, they were designed to have interchangeable parts. If you have a Sag S'G', a later serial number could have an original Underwood barrel as underwood supplied barrels to other manufacturers.

the basic take down, is to drop the mag, unscrew the barrel band (the screw does not come out as it is peened so you don't lose it), push the band forward, take off the handguard, lift out the action.

cock the piece, push out the trigger housing pin and take off the housing, take the op spring and quide out, remove the op slide, and remove the bolt.

Thats usually all. then clean, lube, reassemble.

Every once in a while you will need to take the bolt apart. you need to buy a special tool. Less frequently you can take the inerds of the housing apart to clean. there is a nice tool to remove the trigger spring. The hardest part for me is getting the sear lined up when reassembling the trigger.
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Old 10-20-2005, 06:18 PM   #3
 
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thought I would add that a punch is a nice tool to have when putting the hammer strut back in. Also there is a sticky on the forum about using the tools I mentioned.

I would also add, don't mess with the gas piston unless you have a problem with it, and then I would think twice about messing with it.
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Old 10-20-2005, 06:46 PM   #4
 
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Here is an example of all the parts that are marked on my IBM carbine. The last letter is the prime manufacturer code. The first letters are sub contractor codes.

Most of my stuff is IBM, but my band is Q for Quality Hardware. Notice all my trigger housing parts are IBM, but I have an Inland sear for example. My Op slide is Inland. And some parts like the H.T. flip, I have no idea who made that. Carbine has about 54 parts or something like that including the mag parts...it can all be easily taken apart (except the piston and nut as I mentioned before).

what are the markings on your stock? Mine is Irwin Furniture, a war time replacement stock. the markings are fascinating to try to figure out what they all are.
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Old 10-20-2005, 07:25 PM   #5
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Re: New carbine owner with questions.

Quote:
Originally Posted by powderhead
Since this photo, I have put the sling on correctly, for those of you who noticed.
Nice carbine! Oh -- don't feel too bad about having the sling on wrong.....I had mine on like that until I watched an old episode of COMBAT! and noticed Lt. Hanley's carbine had the sling on the right way, so I checked it out...then put mine on right!
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Old 10-21-2005, 05:50 AM   #6
 
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Depending what the serial number is the Underwood barrel could be right.
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Old 10-21-2005, 04:03 PM   #7
 
Join Date: Oct 2005
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My stock has a Q or O -RMC in the sling recess, and a .U. on the left side of the pistol grip. Serial # is 3216xxx. Is this Underwood barrel origional to the receiver? Tell me all you can. Another question, is the bolt supposed to stay open on the last round? Mine doesn't.
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Old 10-21-2005, 04:23 PM   #8
 
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Saginaw S.G. used Saginaw barrels, Saginaw S'G' used Underwood barrels so yours is a replacement barrel. The ".U. on the left is a rebuild stamp. There is no hold open on a carbine. But the mag follower on the 30 rd was cut to act as a hold open. But when you remove it from the receiver the bolt will close. You got to mash the pin to hold open.
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Old 10-21-2005, 04:44 PM   #9
 
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No hold open after the last shot on the carbine. Your stock is Quality Hardware. Even though it is a mixmaster, it is 100% USGI, thats the most important thing. How does it shoot?
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Old 10-22-2005, 04:41 PM   #10
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The Q-RMC on the stock indicates that it was originally made for Quality Hardware by Rock-Ola Machine Corp. The .U. on the left side is a rebuild stamp. And no, the bolt is NOT supposed to stay open after the last round. That will happen only if the mag has a 30 round mag follower. Otherwise, the bolt will close.
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