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Stupid front sight question

This is a discussion on Stupid front sight question within the The M14 forums, part of the M14 M1A Forum category; The front sight on my Polytech M14S is off-center. It notably to the right, and staked there. This bugs me. I was at a gun ...


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Old June 25th, 2005, 01:03 PM   #1
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Stupid front sight question

The front sight on my Polytech M14S is off-center. It notably to the right, and staked there. This bugs me.

I was at a gun show today and noticed that EVERY M14 I saw there--Fultons, SAs, whatever--all had the front sight offset to the right, most of them even more than mine.

What really bugs me is I had to dial about 10 clicks of right windage on my gun to get it zeroed at 100.

Why are the front sights all offset to the right?

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Old June 25th, 2005, 01:34 PM   #2
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It is never stupid to ask a question! This has been discussed before on this and other forums. From what I have read, there could be many causes and some are:

The receiver threads may be canted;
the barrel threads may be canted;
the front of the receiver might not be level;
the barrel's shoulder might not be even;
the bore of the barrel may not have been drilled straight;
the flash hider may not be straight on the barrel.

Any of these could make the barrel point slightly to one side and make it necessary to adjust the front sight.

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Old June 25th, 2005, 01:37 PM   #3
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Most likely, because the barrel indexing is off.

Find a couple of long stiff metal rods. Thin ones, obviously. With the gun braced upright & level, place one on the flat of the front sight base & the other on the flat behind the rear sight. They should be parallel. Yours probably won't be.

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Old June 25th, 2005, 03:44 PM   #4
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No no, it's not CANTED off to the right, the way my DPMS AR upper front sight is visibly canted a little to the left. The sight is straight up and down. I mean the front sight is slid over to the right in the dovetail groove about .020 or .030.

MY barrel being off I can understand. But every one of the six or so M14s I saw today also had the front sight slid over to the right of the dovetail. Some of them were flush with the right side of the sight base.

It reminded me of the way the tailfins of most WWII fighters are offset a few degrees. Do all M14s have the front sight offset to the right in its dovetail?

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Old June 25th, 2005, 03:50 PM   #5
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its normal to have the sight adjusted one way or the other right up to being flush with the side of the dovetail. however if you have to go beyond that then something is wrong.

with the windage set at zero i had to move my front site to the right to get everything lined up.

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Old June 25th, 2005, 04:36 PM   #6
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It is acceptable to have the front sight drifted to the left or right, as long as the sight does not cantilever over the base. If your sight is moved all the way flush with one side of the base and you still have to move the rear sight to get center, something is off, probably the timing.

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Old June 25th, 2005, 04:45 PM   #7
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Mine's not all the way over flush to the right. But I think if it were centered, I wouldn't have had to crank ten clicks of right windage into the rear sight to get zeroed.

Why don't I just move the front sight, you logically ask? Well, besides it being heavily staked where it is, I cannot get the allen screw to budge one bit. That sucker is ON there. (Which could actually be a good thing.)

The rifle is zeroed just fine now, it just disturbs my sense of the universe being in order to have the rear sight cranked so far to the right. Kinda the way in a flattop AR with a detach carry handle, you have to screw the front sight all the way to the top of the damn "ears" to get zero. (I KNOW the answer to that problem, though.)

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Old June 25th, 2005, 05:13 PM   #8
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If you have to move the rear sight 10 clicks right you can easily move the front sight over to the left. The timing seems ok if you move the rear sight so far over. You could douse the allen screw with Kroil several times over a 48 hour period and I guarantee it will budge...the heat from firing have probably set the bore solvents up like concrete but Kano-Kroil will make short work of it :D

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