FN 663225 FNX15rd 45 ACP FN FNX Stainless/Black Steel

If you own an FNX-45, you know that a quality factory magazine is non-negotiable for reliability downrange or at the range. The FN 663225 FNX 15-round .45 ACP magazine is OEM hardware built to the same exacting standards as your pistol, giving you the feed consistency and durability that aftermarket alternatives often can't match. Built with a stainless steel body and finished to resist corrosion, this magazine handles hard carry, frequent reloading, and the kind of use that separates gear that works from gear that fails.

The design reflects practical thinking: a substantial polymer floorplate and follower provide a secure grip when you're stripping the magazine from a retention pouch in low light or under pressure. Round count witness holes drilled into the rear let you do a quick visual inventory without manually unloading rounds, which matters when you're staging magazines for a long session or verifying your carry setup before heading out. Stainless construction means you're not fighting rust or corrosion, whether you're shooting in humid conditions or stashing this in a range bag for months.

This is the magazine that FN engineers designed for the FNX-45—not a compromise, not a clone. If reliability and longevity matter more to you than chasing a deal, factory magazines are the smart choice.

Key Features

• 15-round capacity for .45 ACP
• Stainless steel body with stainless finish resists corrosion
• Polymer floorplate and follower for secure handling and durability
• Round count witness holes for quick visual round count
• Factory FN original equipment—engineered for FNX-45 reliability

Specifications

Frequently Asked Questions

Will this magazine work with my FNX-45 pistol?

Yes—this is an OEM FN magazine built specifically for the FNX-45 platform.

What's included in the box?

You're receiving the FN 663225 magazine itself. The witness holes and polymer floorplate are factory installed.

Why should I buy a factory magazine instead of a third-party alternative?

Factory magazines are engineered by the same team that designed your pistol and are tested to the same reliability standards. They eliminate compatibility guesswork and feed-related problems that can arise with aftermarket options.

How do the round count witness holes work?

Holes drilled along the rear of the magazine body let light pass through, allowing you to see your round count at a glance without unloading or manually counting.