yeah..i wouldnt even wanna git it a real full auto weapon....thats nothin but troubles...seriously..
If you are talking about the AC556 - you're wrong. I have put thousands of rounds of .223 through mine and it functions flawlessly, even when dirty (with brass ammo). It will fire Wolf steel-cased ammo, but it needs to be kept a little cleaner to avoid the cases sticking in the chamber.
Would I rather have a full-auto AK? Maybe. Although it would be much easier to change out a barrel in an AC556 than a full-auto AK (yes I've checked into this). But, for the cost of a full-auto AK, I could have 2 AC556's, and change to spare.