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Strange Piston Nut

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kro1970 View Drop Down
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    Posted: Oct 17 2022 at 9:41pm

Anybody have any idea as to where this piston nut came from? I know it's not USGI and I'm not very knowledgeable regarding commercial carbines.
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W5USMC View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote W5USMC Quote  Post ReplyReply Direct Link To This Post Posted: Oct 17 2022 at 10:37pm
Howa used a piston nut like that. Page down on the link below.
Wayne
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New2brass View Drop Down
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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: Oct 17 2022 at 10:51pm
National Ordnance offered a double sided piston nut wrench. One side was for USGI nuts, the other to fit your nut.
Unclear if they used a 2 notch nut, but I would suspect that Fed ord as well as Alpine might have been using them.

Let's see what Jim says.

Now I got to look at my Howa
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sleeplessnashadow View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sleeplessnashadow Quote  Post ReplyReply Direct Link To This Post Posted: Oct 18 2022 at 12:26am

National Ordnance (circa 1966)


Howa, for Thai Border Police (1964-1965)


Howa Model 300 Sporting Carbine (1960-1965)
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kro1970 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kro1970 Quote  Post ReplyReply Direct Link To This Post Posted: Oct 18 2022 at 7:56am
Thanks for the help.
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