dude, I have to say, for that price or less, you can get a really good "day scope" like a Leupold VX2, Bushnell Elite 3200 or 4200, Weaver V series, etc. For about $100 less, you can get an illuminated Mueller Sport Dot, which is probably every bit as good as that ATN; maybe better. Besides, you don't need that large of an objective lens for that low of magnification. Doesn't hurt, but doesn't help much either. Just my educated guess. What's the purpose of this rifle & scope combo anyhow? Who knew that all these scopes of mine were known as 'day scopes'?
You guys should get a kick outta this: at this one local gun shop, they have a scoped rifle on consignment. It's an AR10 in .308 with the biggest scope you've ever seen on it. It's the ATN 'day scope' with an 80mm objective lens. Nothing else special about the rifle (other than a precision target grip). No match barrel, no other customizations. Asking price? $4,200.00. That is not a misprint. I told the salesman that whoever buys it, get their number, as I've got some oceanfront property to unload. I think it's this scope:
http://www.atncorp.com/DayOptics/RifleScopes/ATN12-36X80