Hello - I have a National Postal Meter M1carbine 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. I don't want to hammer on the sight if it's been staked in place. I’m attaching a few photos which may help, although I know they are not very detailed. 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
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