Know you're waiting to make scope decision later, but I have a LaRue 12.5 upper and I put a Nightforce 1x8 on it. Not cheap but a very versatile scope that works in close, but can also get you out to 4-500. Of course, if you have the budget there are a lot of nice options. Don't have any experience with it but the new Vortex 1x10 would certainly work. I'm also a big fan of U.S. Optics and have a 1.8x10 scope on another rifle. Super rugged but light it is not.