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T21 Rear Sight

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carbinekid View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote carbinekid Quote  Post ReplyReply Direct Link To This Post Posted: Jan 27 2021 at 2:22pm
I just wanted to bump this back up to see if it generates any new discussion. Not often that prototype stuff turns up. Makes we wish we still had a print newsletter. Definitely fit for publication I’d think.
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painter777 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote painter777 Quote  Post ReplyReply Direct Link To This Post Posted: Jan 27 2021 at 7:20pm
Great find, your fix looks great. I applaud your research and Appreciate you sharing this with us.
We need more of this......... 'Sharing Thing'. Many just want answers it's refreshing seeing a member pull up his sleeves.

I'm also in Michigan, East of Lansing. But grew up in the Downriver area town called Flat Rock.

Thx Again,
Charlie-P777
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painter777 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote painter777 Quote  Post ReplyReply Direct Link To This Post Posted: Jan 27 2021 at 7:36pm
Originally posted by New2brass New2brass wrote:

  If you read an early FM-7 1942 it states "models of the carbine initially will will be equipped with an L-type rear sight, consisting of two arms at right angles, each pierced with an aperture .... Later models of the carbine will be equipped
with an adjustable sight generally similar to that shown in other figures in this
manual."
 

Dan,
Is that the FM that shows the Hammer Stop coming from the Magwell wall?
Plus the grooves on top of the trigger housings rear lug?
And I believe mentions the coming new adj site will provide for 3 points of left and 3 points of right windage ?

I'll look for it when time allows. Thx for the heads up.

Charlie-P777
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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: Jan 27 2021 at 8:22pm
Charlie, yea it was the first FM. I do not remember if it stated points of windage vs just adjustable.
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carbinekid View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote carbinekid Quote  Post ReplyReply Direct Link To This Post Posted: Jan 27 2021 at 9:12pm
My eBay scouring has turned up something interesting that is related to this topic. The sight below seems like it must have been influenced by the oddball double knob rear sight. Looks like it was put into practice post WWII in Europe.

http://www.uscarbinecal30.com/forum/uploads/2217/1F217609-9BCF-4F06-AA0D-493A81FD3F42.jpg
http://www.uscarbinecal30.com/forum/uploads/2217/A8889D2F-0EB9-4584-96E3-78DBBCE7294D.jpg
http://www.uscarbinecal30.com/forum/uploads/2217/F20C453C-F09D-4296-A32F-FD066E6B9318.jpg
http://www.uscarbinecal30.com/forum/uploads/2217/1CB071E7-9FC7-4788-B2A9-633CE6CB3011.jpg


Edited by New2brass - Nov 23 2022 at 11:26am
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carbinekid View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote carbinekid Quote  Post ReplyReply Direct Link To This Post Posted: Nov 23 2022 at 11:12am
I finally got around to doing a comparison between this protype sight and standard production type 2 and 3 sights. I’ll post the measurements I took after the photos.


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