Better to shoot back with an unregistered weapon than to not have one and be killed by the outlaws with guns.
When guns are outlawed, Only outlaws will have guns.
This one needs to be decided by a jury made up of people who have been under the gun.
At which point I, a legal upstanding citizen of this great nation, will then become an outlaw.
As the old saying goes, "I'd rather be judged by 12 than buried by 6."
Carolyn