Dawson Reflex System, for Holosun 507C/508T/507Comp Reflex Sights, Patented DPO-ECO/Tactical Height/Black Co-Witness Rear, by Dawson Precision®

This kit requires the pistol to have a .285″ tall front sight installed.
Staccato Pistols that come with .285″ tall front sight pre installed from the factory:
Staccato C2 DPO Tactical
Staccato P DPO
Staccato XL DPO
Staccato XC
*Installing this kit on a Staccato Pistol with anything other than a .285″ tall front sight will cause the pistol to lose the ability to co-witness iron sights with a red dot.