Hi I have retired and am taking up shooting again. I am new to the forum and noticed there is a factory upgrade for this pistol (KV 123 US). Glock confirmed they would replace 6 parts if I overnighted the pistol to them. Bad news: The cost of overnight shipping is about $70. Also it has a LOT of sentimental value and I am uncomfortable sending it anywhere. Questions: 1) What are those 6 parts? I have had the pistol apart and know it pretty well. 2) Is the a safety, accuracy or reliability problem with it as it is? I have never had a problem. Aside from the trigger action kinda sux. 3) Are the six parts available to the basement gunsmith? 4) I understand that the parts are available free to Glock Armorers. Does anyone have a contact in the Seattle area? I am willing to pay a fair price to have it done. I would rather spend the $70 (or even part of it) on ammo, liquor and women. Not concurrently and maybe not in that order of preference. Thanks in advance for any help. John Wanna kill these ads? We can help!