Submersible to 2 feet, .5 meters.
Yes, but with an Aimpoint magnifier mount.
Yes, P/N 200342 that comes with the mount will work nicely
With a mount, yes it will.
The UTG mount with our magnifier is a special done by Optics Planet, we don't sell it so I am not sure. But most mounts are generally a similar height and it should work well.
They don't match perfectly but it will still work.
The Aimpoint 3X-C Magnifier with Aimpoint flip mount will be at a height of 39mm. So you will need a riser or another mount to bring the Aimpoint 3X-C Magnifier to a lower 1/3 co-witness.
The Aimpoint 3X-C Magnifier model with mount to should work with that set up just fine.
Yes, this is normal. Unlike a mount for a red dot sight, the Magnifier mount does not need to maintain zero as the Magnifier does not affect the red dot sight's zero, so some slight movement is fine. -Aimpoint
With the flip to side mount the magnifier will either flip to the left or right side of the rifle when not in use. With the twist mount the magnifier twists completely on or off the rifle.