Hey Flash Thunder85, I see your post is from 2020, so you probably already figured out that the EGW 0-MOA Picatinny rail is the same one Mossberg sells on their webpage for that gun.
I am trying to put one on mine too because I had a problem zeroing my scope with those Weaver rails that come stock on that Rifle. I bore sighted it with a laser but couldn't align the scope with the red dot.
Anyway, I thought adding a one piece Picatinny Rail might fix the problem, but I am having a problem removing those 5/64 Allen Screws that secure the Factory Installed Weaver Rails to the Receiver.
I removed the stock, and sprayed some CLP on the underside of the screws and let it penetrate overnight, then I heated each screw individually with a soldiering gun and was able to get one of the screws to loosen, the threads were clean with No Red or Blue Locktite, so I'm assuming the remaining screws are the same.
I tried more CLP, let it sit overnight again, and used a propane torch on the underside of the screws, but they still won't loosen.
So my question is, did anyone else have a problem removing these very small screws, and if so what did you do to finally remove them?
These are small Allen Screws with only about 6 fine steel, to steel machine threads holding them, and should unscrew with minimal effort...