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.
Primary Features Striker-fired autoloader Double-action operation Offered as a non-manual safety model Fixed 3-dot luminescent sights (standard) Fixed 3-dot green tritium night sight available (LE ONLY)
SLIDE Easily racked, combat-style sights External extractor; loaded chamber indicator Improved front and rear cocking serrations
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