Holosun 510C Spacer Mount Riser - 1/3 Co-Witness Height

The Holosun 510C Spacer elevates the popular 510C red dot sight to achieve proper 1/3 co-witness height with backup iron sights. This precision-machined spacer solves the common issue of achieving optimal sight alignment on AR-15 platforms and other firearms requiring elevated optic mounting positions.

What Makes This Different

Unlike generic risers that compromise the 510C's low-profile design, this factory spacer maintains the optic's streamlined appearance while providing exact height specifications. The spacer integrates seamlessly with the 510C's existing mounting system, preserving the sight's quick-detach capabilities and maintaining zero retention. Standard aftermarket risers often introduce additional failure points, but this purpose-built component ensures reliable performance.

Key Features

• Raises 510C optic to 1/3 co-witness height for proper iron sight alignment
• CNC-machined aluminum construction with Type III hard anodized finish
• Compatible exclusively with Holosun 510C red dot sights
• Maintains quick-detach lever functionality and zero retention
• Picatinny rail mounting system fits standard MIL-STD-1913 rails
• Low-profile design preserves streamlined optic appearance
• Black anodized finish matches 510C housing

This spacer proves essential for shooters running backup iron sights or transitioning from iron sights to optics. The precise height adjustment allows clear sight picture through both the red dot and iron sights simultaneously. Competition shooters benefit from the faster target acquisition, while tactical users gain redundant sighting options. The robust construction withstands recoil from high-volume shooting sessions and maintains alignment under stress.

Technical Specs

• Material: 6061-T6 aluminum alloy
• Finish: Type III hard anodized black
• Height: Approximately 0.83 inches
• Weight: 1.2 ounces
• Compatibility: Holosun 510C series optics only
• Rail interface: Picatinny/Weaver compatible
• Country of origin: China
• Includes mounting hardware and installation instructions

The 510C Spacer represents the most straightforward solution for achieving proper optic height without compromising reliability or adding unnecessary bulk. Factory engineering ensures perfect fitment and maintains the 510C's reputation for durability and precision.