FN 545 Tactical .45 ACP 4.71-inch FDE 18+1
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About this product
The FN 545 Tactical .45 ACP 4.71-inch FDE 18+1 is a striker-fired duty pistol built for shooters who demand reliability and accuracy from a .45 ACP platform. It comes ready to mount your favorite red dot, with a threaded barrel for a suppressor, and ships with two 18-round magazines. This is a serious handgun for serious use.
| Manufacturer | FN America |
|---|---|
| Model | FN 545 Tactical |
| Material | Flat Dark Earth PVD-finished polymer frame, steel barrel |
| Compatibility | Accepts multiple MRD footprints (RMR, DeltaPoint Pro, etc.) and standard .45 ACP ammunition |
| Finish | Flat Dark Earth PVD on barrel, black PVD on slide |
| Weight | 31.1 ounces (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- Optics-Ready Slide with Co-Witness Sights — Why it matters: You can mount a red dot without losing your iron sights, using the included MRD plates. The tritium night sights stay visible in low light.
- Threaded, Target-Crowned Barrel — Why it matters: The 4.71-inch barrel is threaded (1/2x28) for suppressors or compensators, and the target crown protects the rifling and improves accuracy.
- 18+1 Round Capacity — Why it matters: That’s a lot of .45 ACP on tap. Two 18-round magazines are included, giving you 37 rounds right out of the box.
- MIL-STD-1913 Picatinny Rail — Why it matters: Mount a weapon light or laser without adapters. It’s a standard rail that fits most accessories.
- Striker-Fired Action with Flat Trigger — Why it matters: The trigger breaks clean at about 5.5 to 6 pounds, with a short reset. It’s consistent shot to shot.
Who It’s For
This pistol is for the shooter who wants a full-size .45 ACP that can pull double duty as a home defense gun and a range toy. It’s also ideal for anyone planning to run a suppressor or red dot from day one—no gunsmith needed. The FN 545 Tactical suits experienced shooters who appreciate a high-capacity .45, and newer gun owners who want a reliable, modern platform they can grow into.
Pros and Cons
- Pro: High capacity for a .45 ACP—18+1 is impressive.
- Pro: Optics-ready with multiple mounting plates included.
- Pro: Threaded barrel is standard, saving you an upgrade later.
- Con: The grip texture is aggressive—some shooters may find it rough against bare skin. A glove or grip sleeve can help.
Comparison: FN 545 Tactical vs. Competitors
| Feature | FN 545 Tactical | Zev Technologies OZ9 | Agency Arms AOS Glock 21 |
|---|---|---|---|
| Caliber | .45 ACP | 9mm | .45 ACP |
| Capacity | 18+1 | 17+1 | 13+1 |
| Barrel Length | 4.71 inches (threaded) | 4.49 inches (threaded) | 4.61 inches (threaded) |
| Optic Ready | Yes (multiple footprints) | Yes (RMR-specific) | Yes (Agency AOS system) |
| Price | ~$1,014 | ~$1,800 | ~$1,500 |
| Best For | High-cap .45 with suppressor | Competition 9mm | Custom Glock 21 build |
The FN 545 Tactical offers a higher capacity in .45 ACP than the Agency Arms Glock 21, and it costs significantly less than the Zev OZ9 while still being optics-ready out of the box. Per FN America specs, the 545 Tactical is also one of the lightest full-size .45s in its class at 31.1 ounces empty.
Frequently Asked Questions
Does the FN 545 Tactical come with suppressor-height sights?
Yes. The factory tritium night sights are tall enough to co-witness with most red dot optics when mounted using the included plates. You don’t need to buy aftermarket sights for a standard RMR or DeltaPoint Pro.
What magazines are compatible with the FN 545 Tactical?
The pistol ships with two 18-round steel magazines with polymer base pads. FN 545 magazines are proprietary—they only fit the 545 series. Spare magazines are available from FN and select dealers.
Can I use this pistol for concealed carry?
It’s possible with a good holster and cover garment, but the FN 545 Tactical is a full-size duty pistol. It’s better suited for open carry, home defense, or range use. For everyday concealed carry, most shooters prefer a compact model.
Is the barrel threaded for a suppressor?
Yes. The barrel is threaded 1/2x28, which is the standard thread pitch for .45 ACP suppressors. A thread protector is included.
Does the FN 545 Tactical have a loaded chamber indicator?
Yes. There is a visual and tactile loaded chamber indicator on top of the slide, behind the ejection port. You can see or feel it in low light.
Ready to Order?
This FN 545 Tactical is in stock now. Order online for delivery to your FFL, or stop by the shop to see it in person.
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Last updated: April 2026
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