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Discussion Starter · #1 ·
I was able to zero my m4a3 at 100 yds. but at 200 it hits about 6" left.

Not being a gunsmith, to my mind this tells me that the front site is not indexed properly. Am I right? Can I do anything about this myself?

Thanks
 

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Your barrel may not be indexed on the receiver correctly. My advise is to take it to an AR smith and have him properly index it. Basically, the barrel nut must be loosened, the barrel moved to the correct position and then the nut retightened properly.

Mike
 

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deleted because I apparently can't read in the morning...
 

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Discussion Starter · #4 ·
Got it. Its the barrel, not the site.

Thanks Mike
 

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hard rock is right it's the barrel all right. good call rock
 

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andy said:
so much for all the claims that you can zero a gun 's sights at 25 or 50 yds, hmm?
Its also nice to have a gun to zero.

RIKA
 

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andy said:
so much for all the claims that you can zero a gun 's sights at 25 or 50 yds, hmm?
And what does that have to do with 100yd and 200yd zeroes Rainman?


What this does show however is one thing that can happen when a rifle is not assembled correctly.
 
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