FN 509 MRD | 9mm | FDE | Holosun 407C | 2x17rd | 66101925

The FN 509 MRD is a midsize, striker-fired 9mm pistol built on FN’s duty-proven platform. This kit ships in Flat Dark Earth and includes a factory-installed optics solution, plus two 17-round magazines and interchangeable backstraps for a customizable fit. The slide uses FN’s optics-mounting footprint and fixed sights sized to co-witness with many micro red dots; the package is oriented toward range training and duty-style carry applications. For an optic under $1,000 that pairs well, the included Holosun 407C is compatible and sized for the MRD footprint.

Product Specifications

• The caliber is 9mm.
• The capacity is 17 + 1.
• The model is 509 MRD.
• The action is Semi-Auto (striker fired).
• The frame material is Polymer.
• The frame finish and color is Flat Dark Earth.
• The finish style is Flat Dark Earth PVD.
• The package includes 2 magazines as accessories.
• The included optic is a Holosun 407C.
• The sights type is Optic Height / Fixed to co-witness with common MRD optics.
• The safety configuration is Non-Manual Safety.
• The handgun is offered with an ambidextrous hand control layout.
• The grip material is Polymer.
• The frame description is Polymer Frame with Picatinny Rail.
• The UPC is 845737018320.

The 509 MRD package balances a full-featured grip and modern optics readiness in a midsize platform. It is a practical choice for shooters seeking a reliable range pistol that accepts micro red dots while retaining a full grip profile and generous magazine capacity. The included Holosun 407C and factory mounting plates simplify optics installation, and the interchangeable backstraps allow users to fine-tune ergonomics for consistent shot placement.

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