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3/24/2013 11:58:42 AM EDT
Hello,

I got a newbie question as this is my first AR. I followed the instructions on sighting in at 25 meters my iron sights. When I was done, the rear peep sight was pretty far to the left. In my opinion it seems too far to left. I looked at the rear sight and it looks like it is on square to the rail.


Is that normal or do I have something hosed? Below is a picture of the settings of the sight:

http://i1286.photobucket.com/albums/a602/chaoticmachinery1/rear-sight_zpsaa8315e2.jpg

Thanks,
CM
3/24/2013 12:11:31 PM EDT
[#1]
front sight base may be canted
3/24/2013 12:18:33 PM EDT
[#2]
Some people will tell you that it is "in spec", but I would be pissed.
3/24/2013 12:26:18 PM EDT
[#3]
So are you guys saying the sights may be bad and I should get something better?

Or is it the rifle?

The folks who put the rifle together use a lot of UTG/Leapers products. I think the sights are:
Leapers Rear sight
Front sight

Thanks,
CM
3/24/2013 12:33:26 PM EDT
[#4]
Quoted:
So are you guys saying the sights may be bad and I should get something better?

Or is it the rifle?

The folks who put the rifle together use a lot of UTG/Leapers products. I think the sights are:
Leapers Rear sight
Front sight

Thanks,
CM




ahhhhh, that sheds new light on things.  my only experience with leapers sights was less than positive
3/24/2013 1:19:23 PM EDT
[#5]
Frankly its fine.  Unaesthetic, but normal.  

Probably the UTG rear is contributing slightly, but that the entire shift is more about the front sight and/or barrel.

There are three possibilities: 1) The barrel just happens to shoot a little to the right.
2) whatever your front sight is mounted on (handguard or gasblock) is slightly twisted to the left
or 3) your position is sending rounds slightly right.  

Both my AR and my MP 15-22 have the same issue.  On my AR the handguard is clearly twisted slightly.  On the 15-22, the barrel (or receiver) is probably at fault.
3/24/2013 1:37:48 PM EDT
[#6]
I think part of it must be how you put your head on the gun. Both of my rifles have similarly shifted sights. If it shoots straight, forget about it.
3/24/2013 1:42:56 PM EDT
[#7]
Quoted:
...UTG/Leapers products...


Oh....


Also, if the sight is gas block mounted, and it's a clamp-on style gas block, then it's easily fixable.
3/25/2013 8:52:30 AM EDT
[#8]
Who mated the barrel to the upper is my question?

This could be caused by an enlarged barrel centering notch on the upper, or perhaps a too small, bent, or broken locating pin on the barrel extension. All this could be caused by not torquing the barrel per the recommended procedure or not using grease on the threads.  I recall 7 or 8 years ago we had some Bushmasters coming out of the factory exactly like this which provided a real awakening and awareness to the importance of following the proper torquing spec and using grease.  The fact that your sight is to the left, the same direction that the barrel nut is torqued, tells me this could be the issue.

Additionally, If the front sight base is a screw on type whoever put it on may have not aligned it properly.

More details on the gun, and parts involved would be helpful.

AR's are really easy to work on and throw together which usually leads to a lot of self-proclaimed AR Smith's. Most of the time they'll work without any major issues. However the better guns usually have a better attention to detail.  IMO it's usually best to assemble everything yourself OR buy a complete upper from a well known manufacturer. That way if anything ever goes wrong you're the one to blame or if you buy it from a reputable manufacturer they'll stand behind it and help you through the issue.


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