AR10 scope

[Coffees]

I have heard/read very good things about both the Steiner and NF units you reference. Both are very, very high end pieces.

[Seamonkey]

Based off others comments I went with:
Burris XTR II 4-20x50mm with SCR
https://www.burrisoptics.com/scopes/...cope-4-20x50mm

Aadmount for the scope mount, flip covers and throw lever.
http://shop.aadmount.com/main.sc

I'm a n00b and can't offer comparisons between the Burris/NF/Steiner