flintknapper wrote:Is yours just loose, or does it need to be replaced?
If its on a "carry" gun take care of it immediately. A loose plunger can work out far enough to prevent you from disengaging the thumb safety on some models.
Buy a tool: Midway, Brownell's, etc.... make them.
Its important to support the tube to avoid damage.
+1 You need the tools to do it properly, it's not as easy as it look's.