I knew the A2 and A3 where not full auto but burst fire......Oh well
I also beleive that the M16A4 has a safe/semi/full auto fire control group and the removable carry handle of the A3.....
PS On that game the guys are special operations so they get the M4A1/safe/semi/full auto FCG. Well duh, like regular troops would get to play with a cool toy like the OICW and prototype M8 series first off the line, yeah right....