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FN 509 Compact MRD 9mm Blue/Black Pistol

The FN 509 Compact MRD is a compact 9mm semi-automatic pistol designed for concealed carry and everyday defensive use. Its polymer frame, 3.7-inch barrel, and 10+1 capacity provide a practical balance of size, shootability, and ammunition capacity. The Low Profile Optic Mount System allows compatible miniature red dot sights to be installed while maintaining a compact slide profile, and factory night sights support aiming in low-light conditions. An integrated trigger safety helps prevent unintended discharge while preserving a consistent trigger interface.

Key features

  • Compact 9mm configuration suited to concealed carry and everyday defensive use
  • Low Profile Optic Mount System supports compatible miniature red dot sights
  • Factory night sights provide enhanced visibility in low-light conditions
  • 10+1 capacity offers useful firepower in a compact package
  • Polymer frame helps reduce carry weight and improve handling
  • Integrated trigger safety provides an additional layer of safety during carry

The FN 509 Compact MRD combines compact dimensions, optics-ready capability, and dependable factory features in a practical 9mm carry pistol.

FN 509 Compact MRD 9mm Blue/Black Pistol: quick facts

What caliber is the FN 509 Compact MRD 9mm Blue/Black Pistol?
It is chambered in 9mm.
How many rounds does it hold?
10+1 rounds; magazines included: 2.
How big and heavy is it?
Barrel length 3.7 inches, overall length 6.8 inches, weight 25.5 ounces.
What kind of action does it use?
Semi-Automatic.
Is it optic ready or threaded?
Optic ready: Yes; threaded barrel: No.
What sights and finish does it have?
Sights: Night Sights; finish: Blue/Black.
Is it new or used?
New, in the original packaging.
Can I buy it in Connecticut?
Yes. It ships to a licensed FFL dealer in Connecticut; you pick it up there after the background check. Connecticut buyers need a pistol permit or Handgun Eligibility Certificate, and the Connecticut dealer will only transfer this model if it and its magazines (10 rounds or fewer) are legal in Connecticut.
Is it in stock?
Yes, at $748.06. Orders leave within 1-2 business days; shipping is free over $999.

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