- Jun 3, 2014
- Reaction score
The M4 is the main rifle used by the US military, and no one could question that it is an assault rifle. The M4 is capable of full automatic fire, and 3 round burst, and the AR15 is not. Of course, it would be illegal, but the AR15 can easily be converted to allow those types of fire. Other than that difference, what makes an M4 an assault weapon, and an AR15 not?