XF-7 gun grease! I've been using this stuff for about a month now. It's incredible. This guy on Youtube demonstrates how to use it pretty weill. It is truly the only thing you need on a Glock handgun.
View: https://www.youtube.com/watch?v=h3Bo0YTyQzA
To buy it: https://www.amazon.com/XF-7-Gun-Gre...ombo-Pack/dp/B00HDR46AI/ref=sr_1_1?dchild=1&keywords=XF-7&qid=1574712052&sr=8-1
To buy it: https://www.amazon.com/XF-7-Gun-Gre...ombo-Pack/dp/B00HDR46AI/ref=sr_1_1?dchild=1&keywords=XF-7&qid=1574712052&sr=8-1