Scope mounting suggestions for AR build?

[RobertFL]

I am putting a Warne MSR mount on my 12 inch monster barrel build. Going to use a Burris 3x9x40 Fullfield E1 scope. I have a Bushnell 4500 Elite 2.5 x10 on my 16inch grendel upper, it works well but they quit making them so im gonna try the Burris.