If you have a Glock pistol you have purchased one of the best pistol platforms that have ever been made.  They are rock solid and reliable.  The best part about them for many people is the simplicity that comes in being a Glock owner.  While Glock modifications are endless, generally there isn’t much to do once you get your trigger smoothed up and add some decent sights. However, there are two parts that it never hurts to replace in your...