Full-size striker-fired .45 ACP pistol from FN with a 4.7-inch threaded barrel and optic-ready slide. The 545 Tactical offers 18-round capacity in .45 ACP using a proprietary flush-fit magazine. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 18 Year introduced: 2022, Belgium/USA Weight: 30 oz Overall length: 8" Status: Active Intended use: Service/Tactical