 The DOJ can first seek a temporary declaration that given firearms are assault weapon before categorizing it permanently.e) DOJ determinations of AR/AK "series" membership are subject to challenge and verification.This style of rifle is made by combining an AR-15 upper receiver with an AR-15 lower receiver which has not been banned by specific name, and which has a fixed, non-detachable 10-round (maximum, anything above 10 is a felony) magazine.