FN 509 Standard - 9mm - Black The FN 509 Standard is a full-size 9mm semi-auto pistol developed around FN's focus on durability, reliability, and practical ergonomics. This model features an all-black finish, textured polymer frame, aggressive slide serrations, and a full-length accessory rail. The 509's grip design provides a comfortable, secure feel in the hand, while the interchangeable backstraps allow the shooter to adjust the grip fit. Front and rear sights, ambidextrous controls, and a reversible magazine release round out the platform. Caliber: 9mm Configuration: Standard / Full Size Barrel Length: 4" Action: Striker-fired Frame: Polymer Finish: Black Sights: Fixed front and rear Features: Ambidextrous controls, interchangeable backstraps, accessory rail, front and rear slide serrations Please review all photos for the overall condition and included accessories. Firearm is sold as-is unless otherwise stated.