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Old December 28, 2010, 12:04 AM   #1
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No. 4 Mk. I rear sight retaining pin

I was able to get the pin out with no problems, really...but if something did happen, does anyone know a reputable source for this part? As some know its very tiny, and probably most distributors don't have this small of piece in stock. Replacements? Brad nails, coat hanger wire dremmeled down?
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Old December 28, 2010, 12:41 AM   #2
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Any pin of the same diameter will work. (Broken drill bit, piece of rod, etc.) It's not a complicated part to make.
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Old December 28, 2010, 12:44 AM   #3
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If you mean the tiny pin that passes through the rear sight hinge pin, you have options.
This pin isn't under any stress, and as long as it doesn't fall out, it's good.

One is to use any small piece of pin stock, drill rod, or even the shank of a drill.
On one occasion, I un-bent and straightened out a coil spring that was made of wire the right diameter.

Another option is to spend money and buy a pin by shopping the online surplus parts dealer.
Truth.... any pin that's the right size will work fine.
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Old December 28, 2010, 09:34 AM   #4
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The original pin has a taper, use a brad nail to fabricate a new one.
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Old December 28, 2010, 09:37 AM   #5
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Short (1/2") piece cut from a wire coat hanger.
Chuck in Dremel.
Use fine abrasive paper (400~600) to grind taper on to one end.
Cold blue when done & trim to length & diameter(s) needed.
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Old January 5, 2011, 06:57 PM   #6
Join Date: November 11, 2008
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i have compleat lader sight and the pins if any one is interested (came of of a Mk4#1 that was sporterized) make me an offer
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Old January 5, 2011, 10:22 PM   #7
James K
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I just cut a piece of spring wire, of which I had plenty.

Jim K
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