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TRW Rear Sight Base Identification

This is a discussion on TRW Rear Sight Base Identification within the The M14 forums, part of the M14 M1A Forum category; Ever look closely at the area around the aperture, ever notice the differences and ask why. In the following pictures you will see a marked ...


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Old August 24th, 2014, 09:43 AM   #1
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TRW Rear Sight Base Identification

Ever look closely at the area around the aperture, ever notice the differences and ask why. In the following pictures you will see a marked Winchester rear sight base, an unknown NM sight base and a TRW rear sight.

This side by side picture shows the area around the aperture channel and the two are very different. Notice how one is sharp and pronounced and the other is rounded and sloping.

The TRW base is the one on the left and has the sloping sides where the other has the sharp edges.







Here is a known Winchester rear sight base(stamped OM B3). Notice the same area around the aperture it is also sharp and not sloped, only the TRW rear sight base had that feature and makes them easy to identify.






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Old August 24th, 2014, 09:57 AM   #2
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How did you determine it to be TRW and not SA, an M1 base, or a subcontractor?

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Old August 24th, 2014, 10:27 AM   #3
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Quote:
Originally Posted by Quicksilvergoat View Post
How did you determine it to be TRW and not SA, an M1 base, or a subcontractor?
Matt,

I was at the knob creek machine gun shoot a year ago with a friend who has examined and removed hundreds if not thousands of rear sights from demilled receivers. While at the shoot we were checking out the m14 vendors when he came across a real nice rear sight base with a greenish grey patina, he turned to me and said that it was a TRW base and explained how to tell.


I trust him because he has been an avid m14 collector for 30+ years with lots of hands on experience and had no reason to lie to me. He bought it for himself. I wish I had bought it as it was in original condition.

The two I have have been reparked.

I also have been studing pictures of TRW rifles always looking for the tail tail sign of the rear sight base.

This complete demilled TRW rifle. I have seen many photos such as this.





Last edited by XM25Ren; August 24th, 2014 at 10:49 AM.
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Old August 24th, 2014, 11:02 AM   #4
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Ren,

Thanks for the info. I do appreciate the response.

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Old August 24th, 2014, 11:03 AM   #5
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These are all M14s built by TRW, notice the rear sight bases, while one has the sharp edges around the aperture the others that are visible have the rounded shoulder around the aperture, what are the chances of that, coincidence?



Last edited by XM25Ren; August 24th, 2014 at 11:26 AM.
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Old August 24th, 2014, 11:34 AM   #6
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Well, to help Ren out-here's some pictures-no rounded corners here.
1. Known Winchester marked base on all Winchester build M1A.
2. Known H&R marked base on all H&R build M1A.
3. CMP papered Collector grade H&R M1 Garand barrel date 12/54.
4. CMP papered Collector grade SA M1 Garand barrel also dated 12/54.
Attached Images
File Type: jpg rs 001.jpg (32.8 KB, 61 views)
File Type: jpg rs 002.jpg (31.3 KB, 59 views)
File Type: jpg rs 003.jpg (26.5 KB, 63 views)
File Type: jpg rs 004.jpg (21.3 KB, 54 views)

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Old August 24th, 2014, 11:34 AM   #7
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The sharp edged rear sight looks out of place. The rounded shoulder matches the overall asthetics of the TRW receiver halves I have seen with a more rounded appearance. Went through my spares and found one.

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Old August 24th, 2014, 01:39 PM   #8
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I have more pictures with TRW rifles with the same rear sight base. Just need to dig them up.

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Old August 24th, 2014, 02:15 PM   #9
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The "TRW" sight base appears to be a casting.

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Old August 24th, 2014, 03:08 PM   #10
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Ren ,

You are about 98% correct. TRW did use the cast unmarked bases on almost all of production. But early on they did use the milled bases provided by SA . A late Korean war SA Garand and M14 SA bases are identical . Why retool if you allready have it !

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Old August 24th, 2014, 05:11 PM   #11
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In the early TRW days they out sourced many parts they would eventually build themselves. I have an original early TRW trigger group with an H&R safety another part they outsourced until their own production caught up.

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Old August 28th, 2014, 04:16 PM   #12
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Here is a better picture of the TRW rifles and more TRW M14's in training Fort Jackson 1964 .












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Old August 28th, 2014, 04:55 PM   #13
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Ren,
is it my eyes, the center line on the TRW looks longer in picture # 1.

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Old August 28th, 2014, 05:22 PM   #14
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Quote:
Originally Posted by chief on one View Post
Ren,
is it my eyes, the center line on the TRW looks longer in picture # 1.
Chief, your eyes are fine, the TRW has a shallow well, the Winchester has the deeper well so the line is shorter.

Good catch!

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Old August 28th, 2014, 05:35 PM   #15
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Although this one has the sharp sight base thought you might like the pics , supposed all original TRW select fire rifle. Had this from a member on jouster ,cant remember if its an amnesty or foreign owned.








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