Well, I would recomend the Echo 1 package to him, but ultimately it's his choice. Also, what role is he? If he wants to be a sniper and he has an M4, chances are he won't do very well. On the flipside of that, if he wants to be a CQB operator w/ an M16, he won't do very well. Also, the M16 is heavier than the M4, so he might want to take manuverability into consideration, as well.
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