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IBM receiver with flat area

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PLN-TAP-7 View Drop Down
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Joined: Mar 28 2020
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    Posted: Apr 18 2020 at 2:58pm
Hi,
here is a picture of an IBM receiver with a flat area in front of the rear sight.
This carbine (in the 3 million so January to March 1944 number) must have been through the French Army and is not as out of factory (M2 stock, rear sight, bayonet lug).
Would someone know about the flat area? Has this specificity already been observed?
It may only be a machining error...


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Dan Pinto, Photo Editor

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Post Options Post Options   Thanks (0) Thanks(0)   Quote New2brass Quote  Post ReplyReply Direct Link To This Post Posted: Apr 18 2020 at 3:58pm
Good reporting!

To the flat spot I have observed them on IBM. I would have to look if it was in a specific range.

IBM only delivered for 9 months. they had only one serial number block  3,651,520 to 4,009,999.
They did not use all their numbers. So tough to put it to a date even though some book estimate ranges.

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Dave Tennent View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave Tennent Quote  Post ReplyReply Direct Link To This Post Posted: Apr 18 2020 at 6:29pm
Here's another IBM receiver flat spot example.



Dave
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carbinecanuck View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote carbinecanuck Quote  Post ReplyReply Direct Link To This Post Posted: Apr 18 2020 at 11:11pm
Strange timing for this topic. Just looking at an IBM right now. Showing a similar flat spot.
Serial range 366xxxx. 

I wanted to ask a question about the rear sight, but won't hijack this thread. Will start another
for that.

Here is a pic of the receiver for reference ....


Courage is fear holding on a minute longer. - GEORGE S. PATTON
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PLN-TAP-7 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PLN-TAP-7 Quote  Post ReplyReply Direct Link To This Post Posted: Apr 19 2020 at 3:23am
The first picture is IBM serial 3 821 XXX.
So we have 3 6, 3 7 and 3 8 example.
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