Is my setup 1/3 co-witness?

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[ARCHIVED THREAD] - Is my setup 1/3 co-witness?

Posted: 8/22/2006 10:00:52 PM EDT

I'm using the QRP mount and ring spacer with my Aimpoint on a flattop. Is that considered 1/3 co-witness?

Posted: 8/22/2006 10:26:41 PM EDT

[#1]

I believe so. With out the spacer would be considered an absolute co-witness.

Posted: 8/23/2006 9:23:46 AM EDT

[#2]

I believe that is backwards...the spacer adds the height to get it to co-witness.
Steve/RRA

Posted: 8/23/2006 9:35:00 AM EDT

[#3]

Quoted:
I believe that is backwards...the spacer adds the height to get it to co-witness.
Steve/RRA

If I’m not mistaken, with out the spacer you will have a dead center “absolute” co-witness. With the spacer installed raising the optic, which lowers the irons during co-witnessing, you will have achieved a “lower 1/3rd” co-witness.

ETA: Photo

Posted: 8/23/2006 9:41:27 AM EDT

[#4]

dont mean to be a tard, but looking through your sights..is the top of the front sight post in the lower 1/3 of the view?

[ARCHIVED THREAD] - Is my setup 1/3 co-witness?

AR-15 » Optics, Mounts, and Sights

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