There is no indication on the MGmagic web site that they offer left or right hinges Can you drive out the pins so has to reinsert so that you can create a left or right side hinge.
If not you can try calling to find out if they offer left and right hinges

As the hinges are aluminum and the pins are likely steel what you may try after driving out the pins is putting the pins in a set of vice grips to put some longtitudal crimps in the shaft. When you reinsert the pins the grooves/crimps should bite into the aluminum hinge. Another option would be to put a spot weld on the pin shaft. You can then file the weld down to still leave it proud but not so much that it cracks the hinge when you press it in. If you do decide to remove the pins you may want to use a vice as opposed to a hammer and drift. You will have greater control with the vice than hammering away at it. You do need three hands using the vice to hold the socket, drift or bolt and hinge in alignment when tightening the jaws. Use vice to reinsert the pins