M16 - Flash Suppressor
Bayonet Mount
Selector Switch Burst/Semi

Post AW-Ban AR 15 has none of the above.

Your best adivce is to look at what was covered by the AW ban. Basically these items banned make up the difference between all Military/Civilian weapons.

Money doesn't always bring happiness. People with ten million dollars are no happier than people with nine million dollars ~ Hobart Brown