At Big Lots back by tools. There are thick, hold 25 lbs. each, are coated with black rubber, and are a perfect length to hook the alice from on your pack, without the gun handle being pushed away from the wall.
Best way to mount them, is paint a 2x4 white, (so it doesn’t look like hell on your walls), and drill a hole for each hook so they are spaced far enough apart to grab the corners of the Alice frame.
And even better, they are only $1.50 each!