C&H Precision Weapons Optics Adapter Plate Staccato Duo Steel Holosun 509 ACSS. Since all the mounting hardware is replaceable if any mounting hardware is damaged it can be replaced without replacing the entire plate. Mounting screws included. Specifications for C&H Precision Weapons Optics Adapter Plate Staccato Duo: Manufacturer: C&H Precision Weapons Fabric/Material: Mild Grade Steel Color: Black Gun Model: STI International Staccato P DUO Finish: Electro Deposition Painted Gun Make: Staccato Gun Type: Pistol Package Contents: C&H Precision Weapons Optics Adapter Plate Staccato Duo What firearm models does the manufacturer say C&H Precision Weapons Optics Adapter Plate Staccato Duo is compatible with? The manufacturer suggests that C&H Precision Weapons Optics Adapter Plate Staccato Duo is compatible with STI International Staccato P DUOC&H Precision Weapons STID-PA-509ACSS-ST: Optics Adapter Plate Staccato Duo Steel Holosun 509 ACSS