I like my AR and having a class 3 my M4 especially (4 position selector).
Am I missing something here? Safe, Semi, Burst/Full Auto. What is the fourth position? Really, Really, super fast full auto?
I also have my SIG 556 which is the best of both worlds so to speak. AR mags, AK reliability. As others have said though it is not the rifle but the person behind it.