I’ve got an Aimpoint H-1 on and ADM Absolute Co-Witness QD Mount. I picked up a Burris AR Tripler, and would like to set it up on a pivot mount or QD mount. Does anyone know what mount would align properly with my optic?
LaRue LT-649:
http://stores.homestead.com/Laruetactical/Detail.bok?no=171
Instructions for mounting the AR tripler here:
http://www.burrisoptics.com/laruemountkit.html
I saw that when looking online, but the LT-649-T appears to line up with the T-1/H-1 on a tall mount.
The LT-649-S is what I was thinking might work, but the T-1/H-1 is on a LT-660-HK mount.
The information on the LT-660-HK says it is for 1/3 co-witness on HK-416 or similar piston AR’s, but will not work properly with standard flat top AR-15 uppers. It doesn’t mention anything about it being absolute co-witness for an AR-15.
Does this mean that Larue associates absolute co-witness with not being proper? 
Now I’m confused. What height is your ADM mount? Is it the same height as the LT-660 (tall)?
It appears that I may be confused.
ADM has 2 riser heights. The first is co-witness, which is what I have, the second is SOCOM which I assume is taller.
I believed that the co-witness was absolute, but I think I am wrong. When I look through my optic and Iron sights, it does not line up in the center of the optic, it is lower. This would imply 1/3 co-witness.
This would lead me to believe that the LT-649-T might be the correct mount. As you suggested earlier.
I just want to be sure before I spend $150 to find out I’m wrong.
LaRue has fantastic CS. If it’s the wrong thing, they’ll make it extremely easy to swap.