LOL. I dont have 5000 kills with it, I dont use any one gun that much, but agreed, you only need the M16, and I do quite well with it, obv not as well as you do, but just recently I've found the inner beast of the gun. Although at most of the peoples ranks on here, they have not yet discovred the demon inside the M16 nor do they have the skills to use it, but I personally think that it doesnt matter what gun your using as long as it works for you, but I would still rate the guns low that he named only becuase I personally dont like them, even though their easy to kill with, its just the feel, but the M16 has just the right feel if you know what I mean. I kinda wish they would give you the option of using the M16A4 insead of the current M16A3, as a main wep, or just give you both but you can only equip one at a time so we have a bit of an option for us that use the stock gun.