FN America® FNX™-45 Factory Tactical Magazine – .45 ACP – 10 Rounds – Matte Black Steel – 66322-1
The FN America® FNX™-45 Factory Tactical Magazine (66322-1) is an authentic, premium OEM pistol feeding instrument precision-engineered to deliver absolute mechanical reliability and seamless tracking performance. While aftermarket options frequently suffer from variable feed-lip gap tolerances, weak spring rates, and rough internal stamping that cause devastating failure-to-feed (FTF) jams with heavy defensive hollow-point or flat-nosed ammunition, this factory-original component entirely eliminates those variables. This 10-round premium magazine (845737002558) acts as the gold-standard assurance policy for your tactical handgun setup, bringing unyielding performance to defensive configurations and compliance-regulated security kits.
Precision-fabricated from a thick, heavy-duty tempered stainless steel core tube, the magazine structure features a stealthy, corrosion-resistant polished black nitrided finish. This advanced chemical armor shields the underlying steel matrix from aggressive skin acids, humid field conditions, and abrasive cleaning solvents while drastically lowering mechanical friction against the interior walls of your slide. The internal architecture relies on a highly responsive, low-friction **anti-tilt tracking follower** driven by a heavy-duty, high-tensile music wire spring. This uniform tension layout ensures that fat .45 ACP cartridges are pushed upward at a perfect feeding angle directly against your breech face, completely eliminating localized nose-diving. Finished with a robust, impact-resistant **black polymer base pad**, this 10-round factory replacement matches the exact dimensions required to stand up to heavy drop-free administrative reloads onto concrete lines.
The true functional benefit of this 66322-1 configuration is its strategic design as a legal-capacity compliance asset. Intentionally restricted from the factory to hold exactly 10 rounds, it permits operators residing in strict regulatory capacity-limited jurisdictions to confidently field the powerhouse hammer-fired FNX-45 platform without violating local state laws. Complete with individual numbered visual witness windows along the rear spine for instant ammunition tracking, this turnkey OEM accessory preserves your firearm's factory structural warranties while matching the elite, combat-ready lineage expected from FN Herstal.
Includes: (1) FN America FNX-45 10-Round .45 ACP Factory Steel Replacement Magazine with OEM Black Polymer Baseplate.
*Compliance & Capacity Note: This magazine features a strict 10-round capacity configuration, making it fully compliant for legal sale and possession in restrictive states and municipalities enforcing capacity limits. It is designed to fit flush and lock securely inside the standard magwell frame of the FNX-45 series.
Key Features
- Flawless Factory OEM Architecture: Designed and manufactured on official FN tooling to guarantee perfect lockup geometry, slide-stop engagement, and drag-free drop performance.
- Nitrided Stainless Steel Body: Heavy-gauge stainless steel tube is coated in a polished black finish, fighting off severe environmental rust, pocket lint, and abrasive cartridge scoring.
- True Anti-Tilt Low-Friction Follower: Specialized geometry balances ammunition stack indexing perfectly straight, preventing column binding during intense rapid-fire cycles.
- High-Tensile Music Wire Spring: High-grade spring steel provides reliable upward pressure to smoothly cycle heavy defensive hollow points and flat-profile training rounds.
- Spine Witness Window Array: Features individually numbered witness holes along the rear tracking spine, letting operators visually inspect remaining rounds at a glance.
- Impact-Resistant Black Base Pad: Rugged polymer floorplate dampens violent dropping shocks during tactical reload drills and simplifies quick bench stripping.
Product Specifications
- Brand: FN America® (Fabrique Nationale)
- Product Line: Factory OEM Replacement Parts
- Model Name: FNX-45 10-Round Magazine - Black
- SKU / MPN: 66322-1 (Alternative Part Identifier: 663221 / 66322-1-FN)
- Firearm Model Fitment: FN America FNX™-45 & FNX™-45 Tactical Pistols Only
- Cartridge Caliber Accommodation: .45 ACP / .45 Auto
- Total Payload Capacity: 10 Rounds (Compliance Restricted)
- Magazine Core Material: Premium Tempered Stainless Steel
- Finish Treatment: Polished Non-Reflective Black Nitride Coating
- Baseplate Composition: High-Impact Textured Black Polymer
- Follower Style Configuration: Symmetrical Controlled Anti-Tilt Polymer Follower
- Internal Spring Chemistry: High-Stress Coiled Music Wire / Steel Spring
- Ammunition Tracking Matrix: Numbered Witness Holes (Rounds 2 through 10)
- Country of Origin: Proudly Made in the USA / Assembled to FN Specifications
- Product Net Component Weight: ~3.80 oz (107.7 g) Unloaded
- UPC: 845737002558
