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The FN 545 is a polymer frame striker-fired semi-automatic pistol manufactured by FN America, a division of FN Herstal.
The 545 was released in 2023 alongside the FN 510, which is chambered in 10mm Auto.[2]
Based on the FN 509, the FN 545 is a striker-fired handgun with a stainless steel slide with ferritic nitrocarburizing finish and a polymer frame.
Black and flat dark earth (FDE) colorings are available.
The FN 545's barrel length is 4.1 inches (100 mm) for the Standard Full Size (MRD) model & 4.71 inches (120 mm) for the Tactical model. The backstrap of the grip accepts interchangeable inserts; one arched and one flat.
The slide has serrations on both front and back, for easy slide manipulation.
The FN 545 features double-action operation with magazine releases and slide locks present on both sides of the gun, plus a Picatinny rail located forward of the trigger guard.
Instead of a manual safety, the 545 includes an integrated trigger safety (the articulated trigger type like the FN FNS) as part of its four passive safety systems: a striker block, a drop safety, a trigger disconnect and a trigger safety lever.[3]
The FN 545 primarily uses 15-round magazines; 10-round magazines are available for states with a high-capacity magazine ban.
The FN 545 is chambered in 45 ACP.
Several variants of the FN 545 have been made available:[4]
4.71-inch (120 mm) barrel length, 15- and 18-round magazines, available in black or FDE, threaded barrel, raised sights (to accommodate a suppressor), with low-profile optics mounting system (for a red dot sight).
4.1-inch (100 mm) barrel length, 15-round magazines, available in black or FDE, with low-profile optics mounting system.
