Rumor is that number will be reduced. So don't plan on keeping all 6 on your permit in the long run.
Do you really plan on carrying more than 3 guns in your rotation? Most people I talk to use this method: 1 medium frame gun for winter or higher risk situations. 1 sub-compact for deep concealment and summer, 1 revolver.
Even then, 95% of the time people carry their subcompact in Southern California.

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