Flamberge (gunblade)

Flamberge, known in Japan as Magnum Blaze, is a recurring gunblade in the series, first appearing in Final Fantasy XIII. Outside of its original appearance, it's depicted as a sword.

Final Fantasy XIII
Flamberge is a second tier weapon available for Lightning. It can be obtained by upgrading a Blazefire Saber with a Perovskite and can be upgraded to the Omega Weapon by using the Trapezohedron item, and provides physical defense as its Chain Ability.

Dissidia 012 Final Fantasy
Flamberge is one of Lightning's exclusive weapons at level 30. It provides +40 Attack and +5% Defense. It can be traded for 61,000 gil, the Blazefire Saber, a Scarletite, and Flash's Desire ×5.