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FN 545
FN 545
Type	Semi-automatic pistol
Place of origin	United States
Production history
Manufacturer	FN America
Unit cost	$1,139 (MSRP)
Produced	2023–present
Specifications
Mass	30.0 oz (850 g) (Standard); 31.0 oz (880 g) (Tactical);
Length	7.7 in (200 mm) (Standard); 8.3 in (210 mm) (Tactical);
Barrel length	4.1 in (100 mm) (Standard); 4.71 in (120 mm) (Tactical);
Width	1.45 in (37 mm)
Height	6.0 in (150 mm)
Cartridge	.45 ACP
Action	Double action
Feed system	10-, 15- or 18-round box magazine
Sights	Fixed 3-dot; Tactical and MRD

The FN 545 is a polymer frame striker-fired semi-automatic pistol manufactured by FN America, a division of FN Herstal. Based on the FN 509, It is chambered in .45 ACP featuring double-action operation and a Picatinny rail located forward of the trigger guard.

The 545 was released in 2023 alongside the FN 510 (chambered in 10mm Auto).^[2]

Design details

Features

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. 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 slide has serrations on both front and back, for easy slide manipulation. There is a full-sized grip, housing 15-round magazines; 10-round magazines are available for states with a high-capacity magazine ban.

The backstrap of the grip accepts interchangeable inserts; one arched and one flat. 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]

Magazine releases and slide locks are present on both side of the gun.

Variants

Several variants of the FN 545 have been made available:^[4]

Tactical – 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).
Standard (MRD) – 4.1-inch (100 mm) barrel length, 15-round magazines, available in black or FDE, with low-profile optics mounting system.