Need optics suggestions for 10.5" AR SBR

[mbogo]

I checked my shelves, and found a NIB Primary Arms 1x-4x, a NIB Nikon Monarch 1x-4x, and a NIB Leupold Vari-X III 1.75x-6x. I'm going to try the Leupold first; I think that will be the most practical for my needs.

Thanks for the suggestions.