The FNX™ series is a page out of the book of FN's FNP service pistol series. FNX pistols are hammer-driven (as opposed to the striker-fired operation of the FN FNS series), double-/single-action, and feature fully-ambidextrous magazine release, slide stop lever, and safety/de-cocking levers, as well as stainless steel slide and barrel, a polymer frame with interchangeable back-straps, and a MIL-STD 1913 rail beneath the barrel for mounting of lasers and tactical lights. Available in three calibers: 9mm, .40 S&W, and .45 ACP.

Standard FNX features include:

• Hammer-driven autoloader (double-/single-action)
• Fixed 3-dot sights (standard); night sights available
• Stainless steel slide
• External extractor with loaded chamber indicator
• Front and rear cocking serrations
• Cold hammer-forged stainless steel barrel, with polished chamber and feed ramp
• Polymer frame construction with replaceable steel frame/slide rails
• Two interchangeable back-straps
• MIL-STD-1913 accessory mounting rail
• Serrated trigger guard
• Fully ambidextrous de-cocking/safety and slide stop levers
• Fully ambidextrous magazine release
• Polished, nickel-coated steel magazine body, with low-friction follower and polymer base pad
• Shipped with a fired cartridge, Owner’s manual, locking device, and case