The FN 545 Tactical is a full-size, striker-fired semi-automatic pistol from FN America / FN Herstal built around the ergonomics of the FN 509 Tactical. It is chambered in .45 ACP and features a threaded, target-crowned barrel and an optics-ready slide. The pistol includes night sights and a polymer frame finished in Flat Dark Earth for a balanced field-oriented platform suitable for tactical, duty, and range applications.
Key Specifications
- The pistol is chambered in .45 ACP.
- The barrel measures 4.71 inches and is target crowned.
- The barrel thread pattern is .578×28 for compatible muzzle devices.
- The action is Semi-Auto (Striker Fired).
- The frame is constructed of polymer.
- The finish is Flat Dark Earth PVD on frame and slide.
- The slide is MRD optics-ready and ships with MRD mounting plates.
- The pistol uses night sights (tritium) that co-witness with many MRDs.
- The unloaded weight is 31 oz.
- The overall length is 8.30 inches.
The FN 545 Tactical combines a threaded target barrel, optics-ready slide, and rugged polymer chassis to offer a practical modern handgun platform. Its configuration favors shooters who plan to run an MRD, use threaded muzzle accessories, and operate in low-light conditions with tritium sights. Built to FN’s manufacturing standards, this model is aimed at users seeking a purpose-driven, service-oriented pistol platform.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.




