To my understanding, military members on Permanent Change of Station (PCS) orders are exempt from being considered an importer of firearms. That's what allows service members to bring their personally owned firearms (baring any outlawed features, etc). If that is true, could they "import" BX-25's from out of state and keep them for personal use?
I don't plan on doing this, just trying to figure out the mess if the California system. I walked into a sporting goods store this week in Wisconsin and walked out with a new Savage Mk II thirty minutes later, so all these restrictions are confusing.