Nobody is bringing up the "militia" aspect because SCOTUS just (in the last 5 years) clarified that the RKBA is unconnected to service in any militia.
A gunfight is not the time to learn new skills.
If you ever have a real need for more than a couple of magazines, your problem is not a shortage of magazines. It's a shortage of people on your side of the argument. -- Art Eatman