Holosun 509 Adapter Lower 1/3 Picatinny Mount

The Holosun 509 Adapter provides a lower 1/3 co-witness mounting interface between a Holosun 509 reflex optic and a standard Picatinny rail. CNC-machined from 6061 aircraft-grade aluminum and finished with a Type III hard-anodized coating, the adapter is designed for a stable, low-profile installation. Stainless steel Torx head M3 screws secure the adapter to the rail for a snug, wobble-free fit.

Key Specifications

• This product is an Adaptor.
• The model is listed as 509 Adapter.
• Designed to fit Picatinny rails.
• Provides a Lower 1/3 co-witness mounting position.
• Constructed from 6061 aircraft-grade aluminum.
• Features a Type III hard-anodized finish.
• Uses stainless steel Torx head M3 screws for attachment.
• The product color is Black.
• The listed weight is 0.15 (unit not specified in source data).
• This adapter carries a limited lifetime warranty against manufacturing defects.

Compact and mechanically straightforward, this adapter delivers a stable lower-1/3 mounting option for shooters using a Holosun 509 optic on Picatinny-equipped platforms. Its CNC construction and hard-anodized finish prioritize durability and repeatable alignment while remaining low-profile. The included stainless hardware and proven materials make it a practical choice for users who need a reliable, no-nonsense mounting solution.