FN15 M16 Semi-Auto Rifle: 20″ Barrel Precision for Defense & Range

For shooters who demand M16-pattern accuracy with modern ergonomic updates, this platform blends service rifle heritage with purpose-built components for defense and range work. The rifle’s 20″ barrel and traditional A2 sighting geometry make it a solid choice when long-range consistency and reliable iron sights matter.

FN FN 15

FN FN 15 semi-auto rifle side view with A2 stock and bayonet

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HWK XL 5.56 Giveaway

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Deadline: Feb 1, 2026
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Key Specs and Why They Matter

The FN FN 15 is built as part of the Military Collectors Series and chambers .223 Rem/5.56 NATO, offering broad ammunition availability and common terminal ballistics for defense and training. The 20″ barrel increases muzzle velocity over carbine-length options, improving effective range and grouping potential at typical target distances. The 1:7 twist rate stabilizes heavier 62–77 grain projectiles, which benefits penetration and long-range precision.

Its fixed A2 stock and A2-style front sight preserve the classic service rifle feel and sight picture, while the vertical pistol grip improves control for follow-up shots. The rifle ships with a 30-round magazine and includes an OKC3S bayonet with sheath—an authentic nod to military tooling that some collectors and practitioners appreciate. The black finish and robust construction reflect FN’s reputation as a manufacturer known for service-grade durability.

Modularity and Accessory Options

Equipped with the Knights Armament M5 Rifle Rail Adapter System (RAS), the rifle accepts modern rail-mounted accessories without sacrificing the A2 sight baseline. The RAS gives options for lights, optics, and sling points while retaining the original sighting system for iron-sight redundancy. For those who prefer an optic, the top rail provides a stable mounting surface that pairs well with low-profile backup sights.

Price-conscious buyers should note the listed price of $4799.99 for this Military Collectors Series configuration. For availability and to see full purchase details, Shop this product on our store page where you can complete the purchase through the retailer.

Close-up of FN FN 15 Knights Armament M5 RAS and A2 front sight

Who Should Consider This Rifle

The FN FN 15 is a fit for collectors and professionals who value the M16/Military Collectors Series configuration, require 5.56 NATO capability with a 1:7 twist for heavier projectiles, and want a 20″ barrel for extended accuracy. If that matches your mission or range goals, View product details and pricing to confirm specs and check current availability.

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People Also Ask

What makes this product stand out from competitors?

This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.

Is this product suitable for beginners?

Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.

What warranty or support is available?

The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.

How does this compare to similar products in its price range?

This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.

What maintenance is required?

Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.

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