Holosun 509 Adapter — RMR/HS507C Mount

Holosun 509 Adapter — Adaptor for HS507C / RMR mounting patterns. This adapter provides a mounting interface between 509-style and HS507C/RMR-style optic footprints to allow installation of compatible red-dot optics using the specified footprints.

The primary purpose of this adapter is to enable attachment of optics that use 509 footprints to slides or mounts using the HS507C or RMR mounting pattern (and vice versa where applicable). Intended for use with slide-mounted pistol optics and compatible mounting plates, the adapter is suitable for range use, duty or patrol setups, and other applications where a footprint conversion is required.

• CNC-machined construction from 6061 aircraft-grade aluminum for consistent fit and finish.
• Type III hard anodized finish to improve surface wear resistance and provide corrosion protection.
• Designed to interface with HS507C and RMR mounting patterns; marketed as a 509 adapter for HS507C footprint.
• Black color for low-visibility appearance on most slides and optic bodies.
• Compact adapter profile intended to maintain a low mounting height consistent with slide-mounted red-dot applications.
• Marketed as a rugged mounting accessory for use where reliable optic attachment is required.

Specifications & Construction

• Material: 6061 aircraft aluminum (CNC machined)
• Finish: Type III hard anodized
• Color: Black
• Product type: Adapter / mounting accessory

Compatibility & Intended Use

Explicitly fits HS507C and RMR mounting patterns and is described as a 509 adapter for HS507C footprint. Typical setups include slide-mounted red-dot optics where a footprint conversion is required. Suitable for range, duty, and general shooting applications where the listed footprints are used.

This description is based solely on the supplied product information and lists only the materials, finish, color, and compatible mounting patterns provided.