There may be several updates for your pistol. If you get it updated, be sure to save the original parts. If you send it in to Glock, I doubt that you will get the parts back. You might also check with an Armorer at a GSSF match. Just ask beforehand if you can have the old parts for the collector status of them.
Freedom isn't Free, Peace isn't Pretty. Bush/Cheney 04'
Rimfire Club #66 Niners Club #121
Big Dawg #1121 Wheelhouse #1121
Sub Club #1121