FN 509

The FN 509 is a polymer frame striker-fired semi-automatic pistol manufactured in Columbia, South Carolina, by FN America, a division of FN Herstal. It is chambered in 9×19mm Parabellum featuring double-action operation and a Picatinny rail located forward of the trigger guard. Tactical, midsize, and compact variants have also been made available.

FN 509
TypeSemi-automatic pistol
Place of origin United States
 Belgium
Production history
Designedc. 2015
ManufacturerFN America
Unit cost$649 (MSRP)
Produced2017–present
VariantsTactical, Midsize, Compact
Specifications
Mass26.9 oz (760 g)
Length7.4 in (190 mm)
Barrel length4.0 in (100 mm)
Width1.35 in (34 mm)
Height5.56 in (141 mm)
Cartridge9×19mm Parabellum
ActionDouble action
Rate of fireSemi-automatic
Feed systemBox magazine
SightsFixed 3-dot (standard); Tactical and MRD[lower-alpha 1] variants accept red dot sights

Background

As part of the XM17 Modular Handgun System competition (MHS) initiated in September 2015, FN Herstal entered a polymer-framed, striker-fired pistol, apparently based on the FN FNS.[2][3] After SIG Sauer won the competition in January 2017 with a modified version of the P320,[4][5] FN America brought a version of their entry, now known as the FN 509, to the commercial market.[6] FN America stated that during development and testing of the MHS entry and the FN 509, over a million rounds of ammunition were used.[7]

Features

The FN 509 is a striker-fired handgun with a stainless steel slide with ferritic nitrocarburizing finish and a polymer frame. Black and flat dark earth (FDE) colorings are available. Barrel length is 4.0 inches (100 mm). The slide has serrations on both front and back, for easy slide manipulation. There is a full-sized grip, housing 17-round magazines; 10-round magazines are available for states with a high-capacity magazine ban. The backstrap of the grip accepts interchangeable inserts; one arched and one flat.[6]

Variants

Several variants of the FN 509 have been made available:[8]

  • Tactical – 4.5-inch (110 mm) barrel length, 17- and 24-round magazines, available in black or FDE, threaded barrel, raised sights (to accommodate a suppressor), with low-profile optics mounting system (for a red dot sight).
  • Midsize – 4.0-inch (100 mm) barrel length, 15-round magazines, available in black, with a midsize frame intended for concealed carry.
    • Midsize MRD – as above, with low-profile optics mounting system.
  • Compact MRD – 3.7-inch (94 mm) barrel length, 12- and 15-round magazines, available in black or FDE, with low-profile optics mounting system.

Also available are an inert training pistol,[9] and a Simunition (simulated ammunition) pistol.[10]

The subcompact FN 503, introduced in March 2020, uses the "design, performance and reliability standards" of the FN 509.[11]

Specifications
Specification FN 509 FN 509 Tactical FN 509 Midsize FN 509 Midsize MRD FN 509 Compact MRD
Barrel length4.0 in (100 mm)4.5 in (110 mm)4.0 in (100 mm)3.7 in (94 mm)
Overall length7.4 in (190 mm)7.9 in (200 mm)7.4 in (190 mm)6.8 in (170 mm)
Overall width1.35 in (34 mm)
Height5.56 in (141 mm)5.75 in (146 mm)5.2 in (130 mm)4.8 in (120 mm)
Weight26.9 oz (760 g)27.9 oz (790 g)26.5 oz (750 g)25.5 oz (720 g)
Magazine capacity17-round17-round15-round12-round
Optics mountNoYesNoYesYes
ColorBlack or FDEBlack or FDEBlackBlack or FDE
Reference[12][13][14][15][16][17][18]

For all variants, 10-round magazines are available for states that restrict capacity.
For the Tactical variant, 24-round extended magazines also available.
For the Compact MRD variant, 15-round extended magazines also available, which increase height to 5.2 in (130 mm).

Notes
  1. MRD is an abbreviation for miniature red dot[1]
gollark: It could be good at teaching "computational thinking" skills, except it doesn't really work much like sane programming languages and it's never taught that way.
gollark: Scratch is indeed very uncool.
gollark: That makes less sense.
gollark: I... don't think that's a thing.
gollark: They must have so many weird special cases everywhere for slightly broken software or hardware.

References
  1. Burgreen, Todd (August 1, 2019). "FIRST LOOK: The FN 509 Midsize MRD Pistol Brings Red Dots to EDC". personaldefenseworld.com. Retrieved March 13, 2020.
  2. Patrick R. (17 April 2017). "The New FN 509: Not The MHS Gun, But Close". The Firearm Blog. Retrieved 17 April 2017.
  3. Jeremy S. (17 April 2017). "New From FN: The FN 509 9mm Pistol". The Truth About Guns. Retrieved 17 April 2017.
  4. "US Army moves ahead with handgun replacement programme". IHS Janes. May 31, 2016.
  5. "Army: Your new handgun will be a Sig Sauer". Army Times. 2017-01-19. Retrieved 2017-01-24.
  6. Keel, Tamara (October 11, 2019). "Review: FN 509". shootingillustrated.com. Retrieved March 13, 2020.
  7. Tendas, Pierangelo (April 18, 2017). "FN 509: the one million rounds pistol". gunsweek.com. Retrieved March 13, 2020.
  8. "509 Series". fnamerica.com. Retrieved March 13, 2020.
  9. "FN 509 Training Pistol". fnamerica.com. Retrieved March 13, 2020.
  10. "FN 509 SIMUNITION PISTOL". fnamerica.com. Retrieved March 13, 2020.
  11. "FN Introduces FN 503 Slim 9mm Pistol for Concealed Carry". fnamerica.com (Press release). March 16, 2020. Retrieved March 17, 2020.
  12. "FN 509". fnamerica.com. Retrieved March 13, 2020.
  13. "FN 509 Tactical BLK". fnamerica.com. Retrieved March 13, 2020.
  14. "FN 509 Tactical FDE". fnamerica.com. Retrieved March 13, 2020.
  15. "FN 509 Midsize". fnamerica.com. Retrieved March 13, 2020.
  16. "FN 509 Midsize MRD". fnamerica.com. Retrieved March 13, 2020.
  17. "FN 509 Compact MRD BLK". fnamerica.com. Retrieved March 13, 2020.
  18. "FN 509 Compact MRD FDE". fnamerica.com. Retrieved March 13, 2020.
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