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  #1  
Old 01-01-2010, 08:16 PM
gunsrfun1 gunsrfun1 is offline
 
Join Date: Dec 2009
Location: PA
Posts: 15
Default Flip up rear sight - can I drift it?

Hello - I have a National Postal Meter M1 carbine with a flip-up rear sight. It (the M1) may not be original, but it’s close enough that I do not want to do anything that would mess it up. (I have a CMP Inland as a shooter.) The problem is that the NPM shoots several inches to the right, which is probably fine for combat, but not so great when you're trying to hit a paper target. I'm wondering if I can drift the rear sight slightly to the left without doing any damage. However, I am somewhat hesitant to do this for the following reasons: 1) On the right hand side of the rear sight base, there are two scribe marks that correspond with the right edge of the sight. In other words, it seems like the sight was already adjusted to the right at some point. 2) On the left-hand side, right where the sight is dovetailed into the base, there seems to be some type of tiny piece of metal between the base and the front corner of the sight, almost like it may be some type of attempt at staking the sight. It looks like a tiny fragment of a nail or something, or maybe it’s just some staking mark. I don't want to hammer on the sight if it's been staked in place, for fear of loosening it. I have some photos but I guess there is no way to post them on this forum (there used to be). Anyone have any ideas or advice? Does this sight look staked, and how dangerous is it to try to tap it to the left – could I loosen it permanently? Thanks PS - Here's a site with some photos: http://www.jouster.com/forums/showthread.php?t=4228

Last edited by gunsrfun1; 01-01-2010 at 08:34 PM. Reason: Photo info
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  #2  
Old 01-01-2010, 08:24 PM
KnickKnack KnickKnack is offline
 
Join Date: Oct 2009
Location: Glens Falls, NY
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You can post photos to Photobucket and then post a link to them in here.

Carbines are infamous for having to move the rear sight to the left to zero them. Many of the adjustable sights have their bases mounted left of center and still have to be clicked to the left to zero them.

It would be helpful to see your pictures first before giving any advise, but it is possible to move the sight base to the left. A sight tool would be preferable for doing this to avoid damage.
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Old 01-01-2010, 08:32 PM
gunsrfun1 gunsrfun1 is offline
 
Join Date: Dec 2009
Location: PA
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OK, thanks. Until I get the photobucket thing going, here's a site with pictures posted.
http://www.jouster.com/forums/showthread.php?t=4228
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  #4  
Old 01-02-2010, 12:27 AM
Emmett Dunham Emmett Dunham is offline
 
Join Date: Oct 2009
Location: California
Posts: 1,033
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I would just make a sight picture adjustment and shoot it the way it is. If you start moving the sight you might have trouble getting it to tighten up without marring the finish. If it is staked in original configeration they are not marked up like the adjustable sights, the side of the dovetails on each side of it are pushed in toward the center of the sight. The stake looks like they uses a large size dirft on both side of the dovetail in lieu of a punch to tighten the sight.
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