Firearms

FN FN 509 Compact MRD 9mm 3.7-inch

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Specifications

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Notable Variants

Aftermarket Ecosystem

Historically Significant Examples

Serial Number Data

Production data from factory records and collector research. Year ranges are approximate for pre-1968 firearms.

Years	Serial Range	Count	Factory	Country	Confidence

Compact FN 509 with a factory optic-ready slide for miniature red dot mounting. Combines the carry-friendly size of the Compact with modern optics capability.

Type: Pistol

Action: Semi-Automatic

Caliber: 9mm

Capacity: 12

Year introduced: 2019, Belgium/USA

Weight: 25.5 oz

Overall length: 6.8"

Status: Active

Intended use: Carry/Duty