The Colt M16A2 is the second generation of the M16. This weapon
has seen action in several countries and remains the primary
weapon for many armies. The M16A2 is a burst / single shot
only rifle that fires 5.56mm, 30 round clips. Attached to the
M16A2 is the replacement for the M79, the M203 grenade launching
system. The M203 fires the 40mm High Explosive Grenade.  The 
weapon has been modified to fire at full-auto.

Costs 13 credits.