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AR sight in question

Discussion in 'Rifle Discussion' started by shibbershabber, Aug 16, 2015.

  1. shibbershabber

    shibbershabber Vancouver Well-Known Member

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    So I've got this AR, its a 20" heavy barrel with standard A2 iron sights, never fired and freshly assembled..

    I recall that there was a way that you could sight it in at a short distance, like 15yds or something, where when sighted in at that distance you would be on target at 100yds. Then you should be equally on target at 200, 300, etc by adjusting the rear sight accordingly...


    Anyone know what that distance is? Or direct me somewhere?
     
  2. 808hondacrguy

    808hondacrguy Eugene,OR Bronze Supporter Bronze Supporter

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    I was told it was 25 yards, but never checked it out.
     
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  3. Charliehorse

    Charliehorse Cascade Mts - State of Jefferson USA Well-Known Member

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    50yds should be close to on at 200yds.
     
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  4. v0lcom13sn0w

    v0lcom13sn0w Keizer, or Well-Known Member

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    50yrd with xm193 is the same as 200-225yrd
     
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  5. v0lcom13sn0w

    v0lcom13sn0w Keizer, or Well-Known Member

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    heres a chart:

    image.jpg
     
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  6. rick benjamin

    rick benjamin USA, Or, Damascus Secure the drama Silver Supporter 2016 Volunteer

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    Last edited: Aug 17, 2015
  7. mjbskwim

    mjbskwim Salmon,Idaho Well-Known Member

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    Done this with most the ARs I have built. Your 'point blank' range is at 25 yards and again at 100 yards (where the projectile crosses the cross hairs)
    So take a target to 25 yards to get your horizontal,mostly. Then get your upsy downsy close.
    Dead on should be real close at 100 yards. Then set it at whatever distance you want.
    If you don't do it in close,you waste a lot of ammo.
    First hand knowledge:rolleyes:
     
  8. mortre

    mortre Yelm, WA Active Member

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    Set the rear site elevation to "z" and then use the front site to zero the rifle at 25 yards. When your done just click the rear site drum back to 3/8.
     
  9. Dyjital

    Dyjital Albany, Ore Flavorite Member Bronze Supporter

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    All you want:

    http://www.ar15.com/forums/t_3_18/497571_0_2___The_A2_Rear_Sight_Aperture.html
    http://www.combatsimulations.com/ar15/sightin.htm
    http://www.armystudyguide.com/content/army_board_study_guide_topics/m16a2/zero-and-m16a2-rifle.shtml

    and use a 50 yard zero not 25. You don't need this in battle for suppression fire.

    First step is always a "mechanical zero" of your sights. From there you can dial the rifle in to your precise distance. Most zeroes should happen with less than 12 rounds. 3x 3 shot groups is enough using the proper target.