Staccato DPO3 Tactical Reflex System, Tactical for Holosun 509-T V2, 401-013

This kit requires the pistol to have a .170″ tall front sight installed. Staccato Pistols that come with .170″ tall front sight pre installed from the factory: Staccato C DPO Staccato C2 DPO Carry *Installing this kit on a Staccato Pistol with anything other than a .170″ tall front sight will cause the pistol to lose the ability to co-witness iron sights with a red dot.