Good morning. Just shot my new Glock-19 for the first time, and could not wait to get home, field strip it and clean it. I downloaded a video from Talon Enterprises, where there is a good cleaning video. The trainer did not use a jag in the cleaning process, but should I decide to use one, must I use a NYLON jag instead of the brass one I already have? Also, the front sight seems to be able to be shifted either right or left as there is a slot on the side of the sight. Is there a special "tool" to do this, as it seems that the further away from any metal instrument your Glock is, the safer the finish is? Thanks, and I am happy to be a member from Sarasota Florida. Danel Wanna kill these ads? We can help!