There's a video from the GLOCK Store on a Super Magnet they sell where he emphasized the the three magnets were aligned so as to not magnetize the gun. He mentioned that prevented corrosion. Unfortunately, the item I got from Amazon does magnetize and now I'm wondering if that's really an issue. It's the number one selling gun magnet on Amazon with hundreds of five star reviews. The item is Tac-Mag Gun Magnet with 25 lb Rating. Have any used this one and had issues or any other magnet that magnetized their guns?