Dual handguns, wielded by the Legendary Dark Knight, Sparda. He personally customized these weapons himself, able to fire bullets at a rapid rate. Luce & Ombra translates to "Light & Shadow" in Italian.
In Devil May Cry, the legendary dark knight costume can be unlocked, and introduces Sparda as a playable character. In this mode, he wields the Yamato and these handguns. In Devil May Cry 2, Trish can be unlocked as a playable character, and is shown to also wield Luce & Ombra, as well as the Sparda sword.
An engraving addressed to Dante can be seen in the guns:
For Tony Redgrave
By .45 Art Warks
This engraving is also present in Dante's own handguns, Ebony & Ivory.