- Caliber: 9mm
- Operation: Double-action
- Mag Capacity: 10 or 17 Rd.
- Weight: 26.9 oz.
- Barrel Length: 4.0"
- Overall Length: 7.4"
- Twist Rate: 1:10" RH
- Length: 7.4"
- Height: 5.56"
- Width: 1.35"
- Trigger Pull: 5.5 - 7.5 lb.
- Sight Radius: 5.79"
Offered as a non-manual safety model
Fixed 3-dot luminescent sights (standard)
Fixed 3-dot night sight available (LE ONLY)
Easily racked, combat-style sights
External extractor; loaded chamber indicator
The FN 509™ is built on the proven architecture of the FNS™ Compact, FN made changes internally and externally to meet the rigorous performance standards of the MHS requirements and further developed the platform into the FN 509 with the help from industry experts. Over the course of development, the platform has been tested extensively for reliability, ammunition compatibility and durability – totaling more than one million rounds.
Improved front and rear cocking serrations
Cold hammer-forged stainless steel
Recessed target crown
Polished chamber and feed ramp
Enhanced grip texture which enables faster follow-up shots in all conditions
MIL-STD-1913 accessory mounting rail
Fully ambidextrous slide stop lever and magazine release
High visibility, low-friction follower; polymer base with black finish