I see a number of M4geries fielded by officers who furnish their own rifles. Being the Dept. armorer, I get to sort out their little quirks, shoot them, etc. Granted, none of these rifles are Colts- but your typical generic M4 does not shoot significantly better than my old WASR with a barrel re-crown using Tula FMJ. For a using gun, I prefer the AK.
I'm inclined to think if a man hasn't gotten his point across in 4912 attempts, 4913 probably isn't going to do it.