Changing the firing pin channel liner on a Glock revolver is easy, and this method can also be applied to other firearms. A channel liner is a plastic part that slides inside the slide and prevents the firing pin from slipping out of the slide. A special tool is required to remove the old liner, but this method is not necessary for a new one. The old liner can be removed by threading the end of the tool into the slide. After removing the old liner, you can install the new one by hand or by tapping the end of the tool with a hammer.
How to Remove a Glock Channel Liner Without Tool