What is the different between California approve version of this pistol compare to G.I. issue ? I e-mail question to Springfield but they didn't gave a clear answer . Can I still remove the trigger and main spring housing as easy as the one on Norinco or it require more step? Is this a good pistol right out of the box that can function with SWC and FP type bullet and don't bang up the empty case ?What kind of accuracy can I expect out of this pistol ? I don't plan on any modification other than changing long trigger and flat main spring housing and put wilson checker front strap on.