back up sights - AR15.COM

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Posted: 1/19/2015 8:39:15 PM EDT

Does anyone know why when I use the big hole on the rear back up sights that the rifle shoots low, the front post is turned as low as it can go. But when I use the small hole it shoots fine. I have a sig sauer 516 that came with flip up sights.

Posted: 1/19/2015 8:50:21 PM EDT

[#1]

Quoted:
Does anyone know why when I use the big hole on the rear back up sights that the rifle shoots low, the front post is turned as low as it can go. But when I use the small hole it shoots fine. I have a sig sauer 516 that came with flip up sights.

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Sounds like you need to mechanical zero your sights first.
Here is a link if you need a idea how.

Mechanical zero sights

The small hole is for point targets - small aperture will give the tightest shot groups

The big hole is for area targets and traditionally night fire - your shot groups can vary more with the big aperture

And then of course it comes down to breathing, trigger squeeze etc...

Posted: 1/19/2015 8:53:35 PM EDT

[#2]

Big hole is also used to shoot with a pro-mask on

Posted: 1/19/2015 9:05:30 PM EDT

[#3]

Quote History

Quoted:
Big hole is also used to shoot with a pro-mask on

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Didn't figure he was gonna wear a M 40 LOL
Good add though

Posted: 1/19/2015 11:46:54 PM EDT

[#4]

Topic Moved

Posted: 1/20/2015 1:11:34 AM EDT

[#5]

thanks for the info

[ARCHIVED THREAD] - back up sights

AR-15 » Optics, Mounts, and Sights

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