I have a very early model 22 (serial nm1xx, 1990) that has been shot little and never seen Glock for updates. I know there was a trigger group recall. There is no functional problem with the pistol. I contacted Glock and they said it was under warranty still and they would install some updated parts. Like anyone, I hate to ship the pistol and am uncertain as to the value of the "updated" parts. I am not knowledgeble about Glocks....do I have anything to gain from the factory update? thanks!