Georgia's laws treat an M-16 with a three round burst feature (but no true fully automatic capability) as a standard sporting rifle --not restricted any more than a lever-action deer gun.
The FEDS say 2-shot bursts, three shot bursts and any other type of repeat firing from a single pull of the trigger is a machine gun subject to the national firearms act.
So... you obey the stricter law. The feds' law.
Precisely.