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April 17, 2021 - 1:30 pm
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Thanks to Big Larry, I added a Lyman 1A tang sight to my M1890. 

This is the rifle previously discussed here about a fold down rear barrel sight. 

Sight looks and fits outstanding  by the way. 

Anyway, when extending the sight up, making it longer, can it fly apart, spring pop out, whatever, if the sight is extended all the way out?

Is there a stop, will it just screw out and then screw back in?

I don’t want to make a mistake here by unscrewing something too far. 

 

Thanks as always for all the help given here. 

Mike

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April 17, 2021 - 2:01 pm
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Michaelhking@msn.com said

Anyway, when extending the sight up, making it longer, can it fly apart, spring pop out, whatever, if the sight is extended all the way out?

Is there a stop, will it just screw out and then screw back in?

Yes, it will just screw out, then reverse rotation of the sleeve, & it screws back in.  At the base of the stem you’ll see a tiny hole meant for insertion of a pin about 1/4″ long that came in the box with every sight.  The shooter was supposed to insert it, then file it down so the stem couldn’t be lowered beyond “point-blank” range, say 50 yds.  Most users threw them away.

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April 17, 2021 - 2:11 pm
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There is not a spring that comes out when its extended too far but you can extend it to a point the upper staff comes out. Under normal shooting you should not have to raise it that far unless someone cut the staff short.

Bob

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April 17, 2021 - 4:14 pm
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I found that by removing the stem it allowed for cleaning and lubing.  I used a pipe cleaner for the inside of the stem.   RDB

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April 18, 2021 - 6:39 pm
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Thanks everybody for all the info. That’s a nice idea about cleaning and lubrication. Always a pleasure to post on this forum. 

I had never used a tang sight before. It suits my eyes very well. 

Mike 

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