Originally Posted by
DakarM
my understanding is that they are return to the full auto setup.
i didn't know that, where you hear that?
i've heard/read
m16a1 single/full auto
m16a2 single/3 round burst
m16a3 single/full auto
m16a4 single/3 round burst
and they use burst to save ammo and improve marksmanship.