The Staccato C Duo is designed with the concealed-carry user in mind. Light weight, compact, and now fitted with optic-ready capability. The DUO™ Carry (Dawson Universal Optic) system is designed to work with the Sig Romeo Zero, JP JPoint and Shield Reflex Optics, the DUO™ Carry system will co-witness with these optics and is fully adaptable to the DUO™ Tactical system that come on the Staccato P DUO™ and XC.