Ring heigth for AR-10

[WayneS]

 Just  bought and waiting for delivery on an Armalite AR-10T, What heigth rings will be required to clear the charging handle ?

[Flint]

I have a DPMS LR-308, similar enough.  I had to attach a 1/2 inch picatinny atop the existing rail and a set of Weaver medium high ring to get the height above the shoulderstock at about 2 inches.  This works.  It's not the height to clear the charging handle, but the height to get your eye in place with your cheek on the stock that is important.  I think 2-1/4 inches is about maximum for a quick sight pickup, might depend on your cheekbones.
I tried lifting an additional 1/2 inch with some 3 groove picatinnys and the scope was too high at 2-1/2 inches, but with the normal low Weaver ring set, might be about right, but stacking risers two deep under the Weavers is a bit much.  Better to use taller rings on the reciever's rail and/or no more than one picatinny spacer to reduce the clutter and clamping knob interference.  I alternated the clamps left and right to keep the knobs out of each other's way, with the bottom clamp knobs to the left to stay away from the ejection port.  There are also taller picatinny spacers than 1/2 inch, so match it up to your rings for hieght.

[Bigeasy]

I have the same exact rifle.  If it is anything like mine, you are going to love the accuracy.  On mine, I didn't use any riser blocks, just Burris extra high tactical rings mounted right to the rifles picatinny rail.  Works fine for me as far as proper cheek weld on the stock, and accessing the charging handle.  There are aftermarket companies that make enlarged tactical charging handles that might work better for you if you wear heavy gloves for instance.
 
Larry