Adjusting front sight on ar 15 with an Eotech


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SkinnyGrey
February 6, 2011, 11:20 PM
i recently mounted an eotech holograph sight on my ar 15. today i sighted it in. however, although the eotech is centered, it is not aligned with my front sight. my front sight appears to be aiming to the right of the red dot. hence, i believe my front sight is off.

is there any way i can adjust my front sight to the left?

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HorseSoldier
February 6, 2011, 11:25 PM
Do the irons and the EOTech both put bullets where you want them when you fire?

SkinnyGrey
February 6, 2011, 11:27 PM
no, only the eotech does.

Tommygunn
February 6, 2011, 11:31 PM
Usually you adjust the rear sight if the POI is off horizontally.
If you have the standard AR front sight moving it R↔L is not possible.
Isn't the rear sight adjustable for windage?

SkinnyGrey
February 6, 2011, 11:39 PM
it is. so you are suggesting i move the rear sight to the right?

there is no way to get the front sight aligned with the eotech? even with a gun smith?

Tommygunn
February 6, 2011, 11:47 PM
Usually, that's how it's done ....

SkinnyGrey
February 7, 2011, 12:01 AM
Got it. Thanks!

MrCleanOK
February 7, 2011, 11:03 AM
If your EOTech is zeroed, here is what you do. . .

Turn on the EOTech, and flip up your iron sights (use the small aperture if you have two). Preferably with the use of a mechanical rest for the rifle (bench rest, cardboard box with V-notches cut in it, etc.), adjust the iron sights so that the dot of the EOTech reticle is on the center of the top of the front sight post (elevation), and the rear aperture (windage) is centered on the front sight post and dot. IMPORTANT- do not touch the EOTech zero. Adjust only the iron sights to bring them in line with the EOTech's zero.

This is the reverse of the "lolly pop" method of zeroing reflex optics.

If you don't have enough windage in your rear sight to zero your irons, then you probably do have a canted front sight base. There are ways to correct it (within limitations), but you should have a gunsmith handle it if you don't know what you're doing. If your rifle is still in warranty, a canted front sight base is reason to return it to the manufacturer.

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