An IDF paratroop unit two weeks ago knocked down four workshops in the Palestinian town of Nablus that were illegally manufacturing Karl Gustav automatic machine guns, it was officially disclosed Sunday. DEBKAfile: The ownership of these and other clandestine plants at this Palestinian arms industrial center was not revealed, or the number of rifles produced hitherto. Another raid turned up 15 of these homemade Karl Gustav rifles hidden at Yaabed, a village near Jenin.