Holosun - Mounting Riser Plate for HS510C Collimator - Black - 510C SPACER

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

Lower 1/3 Co-witness – a higher level of aiming

The standard HS510C red dot sight mount positions the reticle exactly on the line of the mechanical sights (Absolute Co-witness). Using the riser raises the optical axis to a height of 41 mm, or 1.63 inches.

In the Lower 1/3 Co-witness configuration, the front sight and rear sight are visible in the lower part of the sight picture. This keeps the center of the field of view clear, which translates to faster target identification and better situational awareness during dynamic shooting.

Durability and lightweight aluminum construction

The baseplate is made of 6061 T6 aircraft-grade aluminum, ensuring high mechanical strength and stable optics mounting. The design is resistant to firearm recoil and the effects of varying weather conditions. While maintaining high durability, the plate weighs only 28 grams. This allows for adjusting the mounting height without noticeably affecting the weapon’s balance.

Installation and Compatibility with the QD System

The plate’s design ensures full compatibility with the factory Quick Detach mount of the HS510C red dot sight. Installation is achieved by placing a spacer between the device’s body and its mounting base. The precise fit of the components guarantees structural stability and smooth operation of the quick-release system without the need for additional tools after initial adjustment.

Features:

• Mounting plate that raises the collimator from Absolute Co-witness to Lower 1/3 Co-witness
• Improves the visibility of the aiming point above mechanical sights
• Lightweight, durable construction with high mechanical strength
• Recoil and weather resistant
• Compatible with the factory-installed QD mount of the HS510C red dot sight

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