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HOLOSUN 510C-SPACER Riser Plate HS510C Lower 1/3 Co-Witness
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  • HOLOSUN 510C-SPACER Riser Plate HS510C Lower 1/3 Co-Witness
  • HOLOSUN 510C-SPACER Riser Plate HS510C Lower 1/3 Co-Witness
  • HOLOSUN 510C-SPACER Riser Plate HS510C Lower 1/3 Co-Witness

The Holosun 510C SPACER is designed for shooters who want to optimize their optic setup with minimal effort. This lightweight and durable spacer plate raises the Holosun HS510C red dot sight, changing its configuration from Absolute Co-witness to Lower 1/3 Co-witness.

Lower 1/3 Co-witness - Higher Sight Position

The standard HS510C mount positions the aiming point directly in line with the iron sights in an Absolute Co-witness configuration. Installing the riser raises the optical axis to a height of 41 mm, or 1.63 inches.

In a Lower 1/3 Co-witness configuration, the front and rear iron sights remain visible in the lower portion of the sight window. This keeps the center of the field of view clear, allowing faster target identification and improved situational awareness during dynamic shooting.

Durable and Lightweight Aluminum Construction

The plate is made from 6061-T6 aircraft-grade aluminum, providing high mechanical strength and stable optic mounting. Its construction is resistant to firearm recoil and changing weather conditions. Despite its high durability, the plate weighs only 28 grams, allowing the mounting height to be changed without noticeably affecting the balance of the firearm.

Installation and QD System Compatibility

The plate is designed to work seamlessly with the factory Quick Detach mount of the HS510C. Installation involves positioning the spacer between the optic body and its mounting base. Precise fit ensures a stable connection and reliable operation of the quick-detach system without requiring additional tools after the initial adjustment.

Features:

  • Riser plate raises the red dot sight from Absolute Co-witness to Lower 1/3 Co-witness

  • Improves visibility of the aiming point above the iron sights

  • Lightweight and durable construction with high mechanical strength

  • Resistant to recoil and weather conditions

  • Compatible with the factory QD mount of the Holosun HS510C