From the blue book:

CITORI LIGHTNING SPORTING (GRADE I)

12 ga. only, features 3 in. chambers, rounded pistol grip, Lightning style forearm, choice of high or low post VR, standard or adj. (new 1995) comb stock, "Lightning Sporting Clays Edition" inscribed and gold-filled on receiver, triple trigger system, 28 in. ported or 30 in. ported or unported (disc.) barrels, approx. 8 1/2 lbs. Mfg. 1989-2004.

C. Will