FN 20100734 545 Replacement Magazine 18rd 45 ACP, Stainless Steel with Black Polymer Extended Floorplate, Fits FN 545 Tactical

The FN 545 Tactical replacement magazine is a factory-original 18-round .45 ACP magazine built to FN's exacting standards for their 545 Tactical pistol platform. Whether you're outfitting a duty weapon, upgrading your training setup, or simply maintaining a reliable spare magazine rotation, this stainless steel magazine pairs proven durability with the extended capacity that serious shooters demand. The nickel-coated steel construction resists corrosion, and the black polymer extended floorplate provides a positive grip point when seating rounds or performing magazine changes under stress.

Capacity matters in a defensive or competition context, and 18 rounds gives you substantial firepower without sacrificing the slim profile that makes the 545 Tactical such an efficient platform. Factory magazines are engineered to the tightest tolerances for your specific firearm, meaning you get the feeding reliability and fit that aftermarket alternatives sometimes compromise on. Having multiple magazines on hand is a basic part of responsible firearm ownership—whether for regular range work, defensive readiness, or simple redundancy.

FN America magazines are manufactured to the same precision standards as the firearms they serve, so you're not betting your accuracy or safety on an unknown quantity. If you run an FN 545 Tactical or are building out your magazine inventory, this 18-round variant offers the capacity and reliability you'd expect from OEM gear.

Key Features

• 18-round capacity in .45 ACP
• Stainless steel construction with nickel-coated finish for corrosion resistance
• Black polymer extended floorplate for improved grip and control
• Factory FN engineering for guaranteed fit and feeding
• Suitable for FN 545 Tactical platform

Specifications

Frequently Asked Questions

Is this magazine compatible with my FN 545 Tactical?

Yes. This is a factory FN replacement magazine designed specifically for the FN 545 Tactical platform. It is engineered to work reliably with that firearm.

What capacity options are available?

FN offers this same magazine in 10, 15, and 18-round capacities. This listing is for the 18-round model.

Will the extended floorplate change how the magazine handles or stores?

The black polymer extended floorplate provides a larger gripping surface for easier magazine changes and loading, though it does add length compared to a flush floorplate. Whether to use extended or flush depends on your carry setup and personal preference.

Is this a factory or aftermarket magazine?

This is a factory FN America magazine, built to OEM specifications and tolerances for your FN 545 Tactical.