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Old 09-05-2014, 14:05   #1
r3dot
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Cowitness

What does it matter if it's absolute or 1/3 if you have flip up sights?
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Old 09-05-2014, 14:32   #2
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The reason I ask is I'm looking at upgrading to a model EXSP, but have flip sights and usually keep them folded down.
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Old 09-05-2014, 15:00   #3
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I'm sure that somebody will have a reason for one preference or another.

Me personally, I don't care. As long as I can see my iron sights when I need to, I'm good to go.
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Old 09-05-2014, 15:02   #4
r3dot
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Originally Posted by fnfalman View Post
I'm sure that somebody will have a reason for one preference or another.

Me personally, I don't care. As long as I can see my iron sights when I need to, I'm good to go.
Yeah, I guess I just don't see why it matters for flip sights. If the optic fails, it's irrelevant as to what the co-witness is when I flip my sights up. There won't be one with a dead optic...
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Old 09-05-2014, 16:26   #5
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For flip up front and rear, absolute co witness makes more sense since your cheek weld will always be the same.
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Old 09-05-2014, 17:27   #6
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For flip up front and rear, absolute co witness makes more sense since your cheek weld will always be the same.
But why does it matter with flip sights? I don't use my sights...they're BUIS
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Old 09-05-2014, 19:08   #7
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Originally Posted by r3dot View Post
But why does it matter with flip sights? I don't use my sights...they're BUIS
Exactly. So when you DO use them (battery dies or whatever), your cheek will go to the exact same spot as when you were using the red dot. If you use lower 1/3, then when your red dot doesn't work and you flip up your BUIS, you will have to get lower on the stock in order to use the irons.

If, as you say, you don't use your sights, why have them on there at all. This stuff really isn't that complicated, but boy do people make it so!

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Old 09-06-2014, 00:26   #8
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Quote:
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Exactly. So when you DO use them (battery dies or whatever), your cheek will go to the exact same spot as when you were using the red dot. If you use lower 1/3, then when your red dot doesn't work and you flip up your BUIS, you will have to get lower on the stock in order to use the irons.

If, as you say, you don't use your sights, why have them on there at all. This stuff really isn't that complicated, but boy do people make it so!
So for the lower 1/3 cowitness you have to change your cheek weld by a whole half an inch. If that.

Like you said, it ain't that complicated. I can shoot the gun's iron sight just fine lower 1/3, higher 1/3, dead on, or whatever. Establish sight alignment, establish sight picture, breathing, trigger pull, follow through. Rinse and repeat.
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Old 09-06-2014, 21:55   #9
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I run lower 1/3rd because of the fixed FSB. I could run absolute but the dot will be right on the front sight post obstructing the view under the dot. Same would be true if you are running the red dot with the BUIS flipped up.
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