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.

SPECIFICATIONS:

• 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
• HEIGHT: 5.56"
• WIDTH: 1.35"
• TRIGGER PULL: 5.5 - 7.5 lb.
• SIGHT RADIUS: 5.79"

PRIMARY FEATURES:

• Striker-fired autoloader
• Double-action operation
• Offered as a non-manual safety model
• Fixed 3-dot luminescent sights (standard) 

SLIDE:

• Easily racked, combat-style sights
• External extractor; loaded chamber indicator
• Improved front and rear cocking serrations 

BARREL:

• Cold hammer-forged stainless steel
• Recessed target crown
• Polished chamber and feed ramp

FRAME:

• Polymer construction with replaceable steel frame/slide rails
• Enhanced grip textures which enables faster follow-up shots in all conditions
• Interchangeable backstraps
• MIL-STD-1913 accessory mounting rail 

OPERATING CONTROLS:

• Fully ambidextrous slide stop lever and magazine release 

MAGAZINE:

• High visibility, low-friction follower; polymer base with black finish

SHIPS WITH:

• Two interchangeable backstraps
• Two 17-round magazines or Two 10-round
• Owner’s manual
• Locking device
• FN logo soft pistol case