Holosun 510C Spacer Lower 1/3 Co-Witness

The Holosun 510C Spacer provides a purpose-built mounting spacer for the Holosun 510C open reflex optic. It is designed to position the optic for a lower 1/3 co-witness relative to a lower mounting surface. The spacer is a single-piece component intended to interface with the HS510C footprint for consistent alignment.

Key Specifications

• The spacer is made from 6061 T6 Aluminum for strength and durability.
• Overall dimensions are 0.90 x 2.00 x 3.55.
• The height is 0.9000.
• The width is 2.
• The length is 3.5500.
• The model is listed as 510C Spacer.
• Includes 1 piece.
• Other features noted as HS510C spacer, lower 1/3.
• Designed to provide a lower 1/3 co-witness when used with Holosun 510C optics.
• Finish/color shown as Black.

Compact and narrowly focused, this spacer helps establish a lower 1/3 sight plane for setups using the Holosun 510C. Machined 6061 T6 aluminum construction balances durability and a low profile. Add this spacer to maintain consistent sight alignment while preserving a minimal mounting height.