FN 545 Replacement Magazine — 10-Round — .45 ACP — Stainless Steel Body w/ Black Polymer Flush Floorplate — Fits FN 545 & FN 545 Tactical — MPN 20100735 — UPC 845737017026

Keep your big-bore FN running with factory reliability. The FN 545 10-Round Replacement Magazine (MPN 20100735) is a genuine OEM mag engineered for .45 ACP FN 545 pistols, including the FN 545 Tactical. Featuring a corrosion-resistant stainless steel body, polished feed lips, and a black polymer flush floorplate, it’s the perfect blend of durability, discreet carry, and consistent feeding—straight from the source you trust.

Why Choose This FN Factory Magazine

• Duty-grade reliability: OEM engineering ensures correct feed-angle, follower geometry, and spring tension for smooth chambering and lock-back in FN 545 platforms.

• Stainless steel construction: Robust body resists dents, warping, and corrosion from sweat, weather, and routine range use.

• Flush floorplate for concealment: Black polymer, low-profile base helps minimize printing while maintaining easy seating during speed reloads.

• Compliance-friendly capacity: 10-round configuration supports carry in capacity-restricted locales (verify local laws).

• Optimized feeding: Tuned spring and durable follower support reliable cycling with a variety of .45 ACP bullet profiles.

Key Specs (At a Glance)

• Brand: FN America

• Model: FN 545 Replacement Magazine

• Caliber: .45 ACP

• Capacity: 10 rounds

• Body Material: Stainless steel

• Floorplate/Base: Black polymer, flush fit

• Finish/Color: Stainless / Black

• Compatibility: FN 545 and FN 545 Tactical pistols

• MPN: 20100735

• UPC: 845737017026

Compatibility & Fit Notes

• Designed specifically for FN 545-series pistols.

• Works with FN 545 Tactical slides/suppressor-height sights and compensator/suppressor setups (mag body remains flush at the grip).

• Not intended for FNX-45, FNP-45, or other non-545 models. Always confirm your pistol model before purchase.

Real-World Advantages

• Concealed carry: The flush base keeps your grip profile trim while maintaining 10+1 potential in the firearm.

• Training & range: Stainless body and tuned spring endure high round counts and frequent load cycles.

• Duty/home defense: Factory-correct tolerances reduce variables—ideal when reliability matters most.

• Load management: Keep multiple mags labeled by load (e.g., defensive JHP vs. ball practice) for clean transitions during training.

Best Practices for Reliability

1. Initial inspection: Check feed lips and follower for debris; wipe down before first use.

2. Load correctly: Seat rounds fully to the rear to maintain stack geometry and consistent presentation.

3. Rotate magazines: Cycle through your mags to distribute wear and confirm reliability across your set.

4. Use quality ammo: Choose SAAMI-spec .45 ACP from reputable brands for optimal function.

Care & Maintenance

• Clean periodically: Disassemble per FN guidance; remove carbon and dust from the tube, spring, and follower.

• Light lube only: Keep internals nearly dry—excess oil attracts debris and can slow follower travel.

• Protect finish: After wet or sweaty carry, wipe exterior surfaces to preserve the stainless sheen and polymer base.

Safety & Compliance

• Follow all federal, state, and local laws regarding magazine capacity, transport, and storage.

• Always ensure the pistol is unloaded before inserting/removing magazines or performing maintenance.

What’s in the Box

• FN 545 10-Round .45 ACP Magazine — Stainless steel body with black polymer flush floorplate (MPN 20100735)

• Factory packaging / documentation (varies by batch)

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Carry confident with factory-grade reliability. The FN 545 10-Round Stainless Magazine delivers smooth feeding, durable construction, and a flush, concealment-friendly profile—perfect for your FN 545 or FN 545 Tactical.

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