AR Rear Sight Question

R

Ray HP

New member
I recently purchased my first AR-15 that will be used for High Power competition. It has a 0.030/0.040" rear sight. It seems logical that the 0.040 is to be used at 200/300 yds and the 0.030 at 600 yds. Is this a correct assumption?

I haven't fired the rifle yet, but the 0.030 seems too small and seems to strain my eye when practice aiming at home. The 0.040 is comfortable, even though it is considerable smaller than my M-1.

I would appreciate some advice from experienced High Power competators reguarding the rear sight diameter that they use and why. Also, do you use one sight or both?

One more question. Does it make any differance if the concave side of the rear sight faces the shooter or away from the shooter, as Armalite claims? They claim that when the concave does not face the shooter it reduces the amount of light reflected into the eye.

Hopefully I will be going to a 100yd range in a few weeks and will post the results.

Thanks in advance.
 
.040"

It's good for all situations I shoot in. the .030" would also work, I guess, but I believe it's inferior as it lets too little light through most of the time and results in greater eye strain.
 
A smaller aperture can cause your eye to focus better, but you may not need it for your eyes. Which ever one you use, don't switch between the two when you change distance. The only things that should be adjusted when you move to a farther line are the elevation and ( if needed ) the windage of the rear sight. Better yet, get a hooded rear sight. It's legal in both High Power and DCM/CMP competition. The better ones are threaded internally so you can change / replace the aperture itself with one that suits you best. You can buy a selection of the apertures for little money and then try them all to find which one works best for you. Not all eyes are equal. I've had my present rear aperture long enough that I forgot what size it is, but it's at least .030" or smaller.

Here's a good article about rear apertures that may help. Scroll down to the last one titled "Shooting".
http://www.Zediker.com/tips1.html

[Edited by Pthfndr on 03-17-2001 at 01:42 AM]
 
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