The FN 503 is a micro-compact pistol engineered for concealed carry, combining FN's renowned durability with advanced design features to enhance shootability, accuracy, and reliability. Its slim profile is balanced by robust metal components, which help mitigate felt recoil and ensure a rigid frame. The pistol's oversized extractor and slide stop contribute to reliable feeding and improved control, while full-height grip stippling minimizes muzzle flip and enhances handling. Designed for serious shooters, the FN 503 features an all-metal trigger that delivers a clean break at approximately 5.5 lbs, coupled with snag-free metal 3-dot sights for a precise sight picture. The barrel includes a recessed target crown, along with a polished chamber and feed ramp for improved performance. The slim frame is optimized for easy concealment and is equipped with advanced texturing for a secure grip. Operating controls are oversized for ease of use, and the slide includes low-profile iron sights to prevent snags, a loaded chamber indicator, and rear cocking serrations for smooth manipulation. Available in flat dark earth and black, the FN 503 comes with both 6-round and 8-round magazines.