Alas, Shimano had their "One Key Release" system out several years before Campy. IIRC, the first Campy crank to have self-extracting bolts was the Victory crank, which pre-dates C-Record by a couple years. Campy bizarrely used left hand extractor thread on these arms, so if the self-extractor bits are missing you need a special left-hand thread tool to remove the arm properly.