Awesome video, followed it pretty much step by step as I disassembled and cleaned my new 590A1 Very useful for gun newbies like myself!
Welcome aboard from PA! It is a great video. I'm glad you found it and M.O. I hope you take some time and check in on the New Members Thread too. You will find we are all things Mossberg but also a bunch of gun folks in general.
Quick question, new to this forum. I am looking into purchasing a used m590a1 with ghost ring sights from my local store for 399$ looks like it is in excellent condition except for the yellowish glue under the front sight that looks to have maybe dripped towards the tip of the barrel and dried. Would that be an issue removing or cause any sort of rust or corrosion? Thanks