FN 545

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.

• FN FNS
• FN FNX
• FN FNP
• FN 509
• FN 503
• FN 502
• FN 510
• FN HiPer
• FN Five-seveN
• Browning Hi-Power