I have an old old Glock 27 that I want to get checked out and the springs/extractor/parts/etc. checked out on it. I need a Glock armorer that really knows his stuff as I am very particular. I’ve had this gun for around 18 years. Also need new sights. I am in Tulsa. Attached is a pic, notice the front of the grip is smooth. I assume there is some type of factory replacement kit for the springs. Thanks for any and all info.