FN 509

The FN 509 is a polymer frame striker-fired semi-automatic pistol manufactured by FN America, a division of FN Herstal.

History

As part of the XM17 Modular Handgun System competition (MHS) initiated in September 2015, FN Herstal entered a polymer-framed, striker-fired pistol, derived from the FN FNS.

After SIG Sauer won the competition in January 2017 with a modified version of the P320, FN America brought a version of their entry, now known as the FN 509, to the commercial market.

FN sought consultation from retired Delta Force operator Larry Vickers during early development of the FN 509.

FN America stated that during development and testing of the MHS entry and the FN 509, over a million rounds of ammunition were used.

Design

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.

The FN 509's barrel length is while employing a full-sized grip. The slide has serrations on both front and back, for easy slide manipulation

The FN 509 features a Picatinny rail located forward of the trigger guard. The backstrap of the grip accepts interchangeable inserts; one arched and one flat.

Operation

The FN 509 features double-action operation with magazine releases and slide locks present on both side of the gun.

Instead of a manual safety, the 509 includes an integrated trigger safety (the articulated trigger type like the FN FNS) as part of its four passive safety systems: a striker block, a drop safety, a trigger disconnect and a trigger safety lever.

Magazines

The FN 509 primarily uses 17-round magazines; 10-round magazines are available for states with a high-capacity magazine ban.

Ammunition

While the FN 509 is primarily chambered in 9×19mm Parabellum, FN Herstal also offers the model in other calibres.

Specifications

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 .

Variants

509

Aside from inert training pistol and Simunition variants, several offerings of the FN 509 have been made available:

Tactical

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

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

barrel length, 12- and 15-round magazines, available in black or FDE, with low-profile optics mounting system.

Other variants

FN 503

Introduced in March 2020, the FN 503 is the subcompact model of the FN 509.

FN 502

Introduced in September 2021, the FN 502 is the .22 variant of the FN 509.

FN 510

Introduced in 2023, the FN 510 is the 10mm Auto variant of the FN 509.

FN 545

Introduced in 2023, the FN 510 is the .45 ACP variant of the FN 509.

Users

*
** Standard-issue sidearm (MRD-LE variant) of the Los Angeles Police Department as of 2021.

See also

* FN FNS
* FN FNX
* FN FNP
* FN HiPer
* FN Five-seveN
* Browning Hi-Power

Notes

References

External links

*

FN 509 Comparison
by Hickok45 via YouTube

{{FN Herstal firearms

9mm Parabellum semi-automatic pistols
FN Herstal firearms
Semi-automatic pistols of the United States
Weapons and ammunition introduced in 2017