Anyone know the reason(s) behind the expiration date?  

I could possibly imagine:
1.  Someone doesn't want the list to grow forever and include obsolete (no longer made firearms)
2.  Check to make sure guns don't change.
3.  More revenue $ to recertify.
4.  Creates a temporary list of OK guns that, conveniently, will disappear unless action is taken.

http://justice.doj.ca.gov/safeguns/safeguns_new.taf?_function=list&_UserReference=D64527ED9FC8EAE63ED84CAA

one reason only

[b] $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ [/b]


they claim its "yearly posting and listing fees"

The land of fruits and nuts. Nuff said.

Turning paradise into a third world country is expensive.

cynic

I think demo-crap re-election fees.  They are tring to add a fee to ammo now (10 cents per round)

Legalized extortion.