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View Full Version : How to sight an AR 15, Colt 6920, iron sights?


cyrus
12-07-2009, 7:56 PM
How to sight an AR 15, Colt 6920, iron sights?

The wheel in the handle does not seem to bottom on a precise number. The pin in the front site will screw up or down.

So if I want to set the sights at 100 yards where does the wheel line up? Will it be at bottom?

oaklander
12-07-2009, 8:01 PM
Standard way to sight in iron sights:

DO it at 20 or 25 yards.

First see if it's on paper.

Then move the BACK site left or right so that your windage is correct. On the BACK sight - moving the sight RIGHT moves the point of impact right, etc. . .

Then adjust your elevation. Moving the front site post DOWN moves your point of impact UP, etc. . .

Then do at 50 yards.

Then do at 100 yards.

If it's a new rifle, it should be close without adjustment. If you've already made adjustments, then well. . .

cyrus
12-08-2009, 9:59 AM
and the bottom wheel?

oaklander
12-08-2009, 10:17 AM
and the bottom wheel?

That also works for elevation.

aermotor
12-08-2009, 10:21 AM
I start at 50 or 100 yards, shoot adjust, shoot adjust, repeat ad nauseum... Keep the rear sight all the way down. I find that 100 yards usually = 300 yards when shooting at steel, it's when I get below 100 yards that I need to hold lower when aiming.

Swatguy10_15
12-08-2009, 10:26 AM
Another way of doing it is "zeroing" the rifle.
Basically get yourself a 25 meter "zeroing target" it will be "graphed" with squares.
Aim at the center and fire 3 rounds. Do this until the 3 impact points are within about 4 squares of each other. This ensures that youre not just changing sight picture etc.

Once you have those 3 grouping tight, adjust the iron sights accordingly to get that group in the center of the target. Now if you do this at 25 meters, with the 25 meter target youre weapon is now "zeroed" to you. You shouldnt have to adjust the front sight post or the lateral movement on the rear iron sight.

cyrus
12-08-2009, 1:01 PM
The wheel in the handle does not seem to bottom on a precise number. Where does the wheel line up? Will it be at bottom?

kf6tac
12-08-2009, 1:16 PM
The wheel in the handle does not seem to bottom on a precise number. Where does the wheel line up? Will it be at bottom?

Is there either a "8/3" mark or a "6/3" mark on it? There should be one or the other depending on the sights, and normally the wheel should bottom out on it (or extremely close to it).