I think at the very least we all can agree that 18 year olds should not be allowed to buy magazine fed , semi-automatic rifles...right? There's got to be a starting point somewhere right?
Having served in the US Army and having operated the M15, and seeing exactly what it does, outside of gun collectors, there is no legitimate reason, IMO, to own an assault style rifle prior to the age of 30 or so.
But ill start at making it impossible for an 18 year old to purchase and own.