I don't have any personal experience. But I was considering the ATN for my .50 Barrett until I did a search on the web and found many many complains about lens quality and excessive green tint. I stayed away from ATN based on these reviews. I always have to go back to the first rule of optics "you get what you paid for". If everyone can build Swarovski for $100, they won't need to sell at $1000.