If there is ever a doubt, take it to a Glock Armorer for a full takedown, cleaning, inspection and reassembly/lube. Then ask the armorer to show you proper preventative maintenance.
I can not tell you the number of times someone has oiled the debris hole on the slide of their Glock...arrrgghhhh
I can not tell you the number of times someone has oiled the debris hole on the slide of their Glock...arrrgghhhh

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