I have a good friend (and the man responsible for corrupting me with the double rifle sickness) looking to buy a 12 bore Paradox with pistol grip, underlever, double hammered back action. Does anyone know of a gun meeting this criteria for sale?

P.S. Not sure if I should have put this in the shotgun or the double forum, if it is in the wrong forum, I am sorry and will try to rectify the wrong.