Military bases are generally federal land and federal laws trump state laws.
If your base commander and the armorers will sign off on it, I'm pretty sure you can store your personal NFA weapons in the base armory.
Then you should only need to do the nfa interstate travel notification form when you move them into and out of the base.
I don't think you would be able to use them outside of the base within the state of CA.
I doubt your base commander and armorer will sign off on it though.
AR work: www.ar15barrels.com
Bolt actions: www.700barrels.com
Foreign Semi Autos: www.akbarrels.com
Glock, XD and M&P pistols, Benelli and Remington shotguns: barrel, sight, trigger and receiver work.
Most work performed while-you-wait, evening and weekend appointments available.
Founding member of the CAPRC