How about this?
The gun will only "not work" for people who are in a database as being anti-2A. This would be ideal really. They don't want the gun to work and believe guns are bad so not having it work when they might want it to would be ideal.
Tomorrow is the most important thing in life. Comes into us at midnight very clean. It's perfect when it arrives and it puts itself in our hands. It hopes we've learned something from yesterday.