If you can afford $115, the Mueller APV is an excellent scope. I have one on my NEF 223 and love it. Chances are, you will not have a problem, but if you do, I have heard that Mueller has excellent customer support. If you do some searching around on other sites, you will find many happy customers. Just another option.

http://www.mizzoumuleguns.com/id12.html

About a year ago I bought a 4-12 Simmons at Walmart and put on the 223. It was ABSOLUTE JUNK. I have a 3-9 Simmons that came on a Savage package rifle. That 3-9 is a pretty darn good scope. It was the reason I purchased the 4-12 Simmons. What a mistake.