How To Zero The Iron Sights On An Ar-15 Rifle Revisited

Posted: January 10, 2013 in Weapons
Tags: , , , , , , , , , , , , , , , , , , , , , ,

Here’s the method I use to zero the iron sights on my AR-15 rifle.  The purpose of zeroing your sights is so that your point of aim equals your point of impact.  So here’s the method I use on my AR-15.  Feel free to ask any questions if any of this needs clarification 🙂

  1. Set your elevation knob to 8/3 low or if you are using the carry handle which is what I do, to 6/3 low.  The elevation knob will be located just below the peep sight.
  2. Flip the aperture to the long range sight (small peephole) although as you get older you may find the short range aperture (large peephole marked 0-2) easier to use and if that is the case then use the short range sight.
  3. From a steady position aim at the center bulls eye of your paper target, which should be set out at 25 meters which is equal to approximately 27.34 yards and fire a 6 round grouping.
  4. If your grouping has hit the bulls eye then there is no further adjustments needed.
  5. If the grouping has not hit the bulls eye; then estimate how many inches away from the bulls eye both vertically and horizontally you are and adjust as follows.
  6. Calculate your clicks of windage (left to right) required to move the impact point towards the center of the bulls eye.  On my AR-15 using .223 ammunition at 27.34 yards, each click equals 3/8 of an inch.  Then adjust by rotating the windage knob located on the right side of the carry handle.
  7. Calculate clicks of front sight elevation (up and down) required to move the impact point towards the center of the bulls eye.  On my AR-15 my elevation equals 3/8 of an inch for each click at the previously specified distance.
  8. Using a $7.00 or so front sight adjustment tool (much easier to use then a nail) depress the front sight plunger and turn the required number of clicks to move your point of impact towards the bulls eye.  Clockwise lowers the sight but raises the point of impact.  Counter clock wise raises the sight but lowers the point of impact.
  9. Fire another 6 rounds at the bulls eye.  If your grouping hits the bulls eye your adjustments are done.  If not, repeat steps 5 through 9 until your point of aim finally equals your point of impact.

You can get a free preview of my first two post apocalyptic fiction books by clicking on the book cover images to the left of this blog post, on my blog page, which will take you to the website. Then you can click on the look inside option which will give you a free preview.  If my survival fiction books interest you; then consider purchasing them.  Book titles include American Rebellion Book 1 of the Revolution and American Rebellion Book 2 of the Revolution.

  1. paualready says:


    This is an interesting article and a point of view that has crossed my mind.

    We have been very close to going for a permit and buying a gun before we cannot, but in reality the process is so onerous if you do not already own registered guns I am not sure this is the best way to go. Hawaii already has ridiculous gun laws.

    Do you have any ideas about self-defense items (nail guns, pepper or wasp spray, tasers, etc.) that do not involve finger-printing and becoming part of the inevitable national data base of legal gun owners??

    Maybe you can blog on this. I appreciate your comments.

    Aloha, Mikie* *~*just *a blogger (fighting like a girl!)

    ** **

    • rmactsc says:

      The unfortunate reality is that if you legally purchase a gun you need to fill out the forms which in turn places you in a database. That should not stop you however from getting your permit and purchasing the best firearm for your needs. It is still better to have a firearm or firearms and not need them instead of needing them and not having them. Regarding other self defense options it would depend on what you feel comfortable using as almost anything can be used as a weapon; it just depends on how skilled one is using it.

  2. docdigit says:

    Good article! Hey, please read my latest and spread it far and wide, it may help all of us who believe in the 2nd Amendment.

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