Fisas' method for the sidesword embraces most of italian treatises about this weapon (Agrippa, Palladini, Di Grassi, Viggiani, Lovino, Ghisliero, Saviolo, Docciolini) to sum up the main mechanics whose evolution is the well known italian fencing weapon: the rapier.
Fisas sideswords are replicas of the original one, with various (historically accurate) hilts and blades developed to be used safely during training.