Walk the line at any FCSA match and you'll see that NF scopes are the dominant scopes used buy the shooters. After that its Leupold scopes and then other brands fill in the rest of the line. For the money its hard to beat what NF offers in their line up.
As for the AI .50 BMG, I would like to have one but at $12K+ without glass... I'll pass and get something better at a lower price. Before you go spending ALOT of money do your homework, when it comes to .50's higher price doesn't always mean better.
I see the world thru bloodshot eyes
Streets filled with blood from distant lies
The dogs of war never compromise,
No time for rearranging.