Magazine Box Replacement

Any tricks to install the magazine box on a pre-accutrigger short action? If the rear tab gets broken off, does anyone have a trick to get it to work? What can I say, I'm cheap.... :)

Thanks

Start the front tab in first, then use a wide blade screwdriver to drive in the rear tab, holding the screwdriver at about 45 degrees. If you notice there is a bevel above the rear tab cutout, that is what it's for. By holding the screwdriver at 45, it will compress and push down at the same time when you whack it with a hammer. If you break the tab somehow, try some hot glue, it's only semi-permanent.