March., There is no reason one of Nikon's AR scope's won't serve all your needs. From the M-223 1-4 Point Blank Reticle to our M-223 4-16 BDC or Rapid Action Turret Scope.
I have been using these scopes by choice long before I started doing any work for Nikon. Drop me a note if I can help you any further.
Here's a pic of one of my favorite's, M-223 2-8 Rapid Action Turret. I have it on my .300 AAC Blackout