If you say so. It is obvious you have never heard of a SAW, never mind carried and shot one.
ATF definition of a machine gun:
For the purposes of the National Firearms Act the term Machinegun means:
- Any weapon which shoots, is designed to shoot, or can be readily restored to shoot, automatically more than one shot without manual reloading, by a single function of the trigger
- The frame or receiver of any such weapon
- Any part designed and intended solely and exclusively or combination of parts designed and intended for use in converting a weapon into a machinegun, or
- Any combination of parts from which a machinegun can be assembled if such parts are in the possession or under the control of a person.
https://www.atf.gov/firearms/firearms-g ... initions-0
Here is the ATF list of Class 3 weapons. Go ahead and post where the DDM4, or any AR 15 is on the list.