Thanks Carl! simple and it works!
Very clean hack. I like it. That metal piece is the perfect size, like it was made for this. Please link the phone holder and exact magnets for others to copy.
I am using the versions sold by HF. as they are poled flat to flat rather than edge to edge. Gives stranger holding force. LOLIn on gun, I milled, (plunged a blind hole) the depth of the length of the magnet in the center of the loading port and another one in the bottom of th magazine. When you start the mag, it snaps it place on its own. Kinda nice. I can't claim to have thought of this. Saw it in my AirWolf a few years back. Thinking of adding one each to the mag holder in the Mini Raptor.