The FN 509C Tactical is a semi-automatic compact pistol chambered in 9mm Luger. The 4.32-inch threaded barrel, 24+1 capacity, and suppressor-height tritium night sights make it ready for suppressed use from the factory. At 26.20 oz (1.6 lbs), the polymer frame over stainless steel slide balances durability and weight for carry or duty use. 
 

Key Specifications 

• Brand: FN America 
• Model Name: 509 Compact Tactical 
• Caliber: 9mm Luger 
• Capacity: 24+1 rounds 
• Action Type: Semi-Auto (Double Action) 
• Barrel Length: 4.32 inches 
• Overall Length: 7.4 inches 
• Weight: 26.20 oz (1.6 lbs) 
• Frame Material: Synthetic polymer with integrated Picatinny rail 
• Slide Material: Stainless Steel (Matte Black Finish) 
• Sights Type: Suppressor Height Night Sights (3-Dot Tritium) 
• Grip Style: Textured Black with Interchangeable Backstraps 
• Safety Features: Ambidextrous slide stop, ambidextrous magazine release, loaded chamber indicator 
   

Detailed Features 

The threaded barrel ships ready for suppressor or muzzle device attachment. Suppressor-height night sights maintain a usable sight picture when a can is mounted. The optic-ready cut slide accepts common miniature red dots directly. At 24+1 rounds, the capacity is higher than most compact pistols in the same size class. Interchangeable backstraps accommodate different hand sizes without tools. The integrated Picatinny rail accepts weapon lights and other accessories. Ambidextrous controls work equally for left- and right-handed shooters.

Feedback on the FN 509C Tactical in 9mm is generally positive, with the high capacity and suppressor-ready configuration as the main draws.

Ergonomics get frequent positive mentions -- the grip texture is described as secure without being abrasive, and controls are laid out intuitively. The 24+1 capacity stands out as a meaningful advantage over comparable compacts, and the threaded barrel is appreciated by those who use or plan to use suppressors. Range accuracy and reliability across ammunition types are consistently noted as strong points.

Pricing generates discussion. Some owners see the cost as fair given the features; others compare it unfavorably to Glock or Sig Sauer options at lower price points. Trigger feel gets mixed reactions -- weight and travel distance are acceptable to most but not as refined as some competitors. Aftermarket options are more limited than for the highest-volume platforms. The overall impression is a purpose-built suppressor-host compact that earns its price for those who want that specific configuration.