Not sure which model it was, but I used a Nikon P-223? at the range the other day on my friends AR. I have to say, it was pretty freakin awesome. I have an Aimpoint and magnifier, but I really liked that one. It had a magnified dot (I believe), and was a 4x fixed zoom. At 25 yards you could acquire fast enough and I'd imagine it could reach out pretty well too. Glass was surprisingly very clear and bright. I think he paid 99$ on sale. He said normally it was 200 or 250. Got an amazing deal.