I was very close to buying a Bushmaster Varmint last year but at the last minute opted for a Tikka Varmint in .223.  Well, that old feeling is coming back around and I'm looking at AR's again.  I have no experience with these types of rifles and my big question is accuracy.  My buddy's and I target shoot and I just don't know what to expect from an AR.  My Tikka will typically do sub- 1/2 inch groups at 100 yds and for my use, I would hate to spend the bucks for an AR and not get the results I am looking for.  Any comments on what kind of accuracy you guys are getting is welcomed.  Also, suggestions on manufacturers and models.  Thanks