Five-seveN® Accessories

FN Five-seveN® Accessories & Upgrades Overview

FN Five-seveN® accessories and upgrades at FN Specialties include optics, the EFK Fire Dragon threaded barrel, +5 magazine extensions by Dorin Technologies, the ProMag 55-round drum magazine, and suppressor options. We offer enhancements for both the FN Five-seveN® MK2 and MRD/MK3, helping you upgrade your pistol for greater accuracy, reliability, and customization.

FN Five-seveN® Optics & Mounting Solutions

Adding an optic to your FN Five-seveN® enhances accuracy, speed, and confidence. Red dot sights are especially effective for defensive and competitive shooting, providing quick target acquisition and consistent precision.

The FN Five-seveN® MRD/MK3 comes optics-ready, while the MK2 benefits from the DT-CAOS Red Dot Mounting System by Dorin Technologies. This patented system securely mounts modern optics without permanent modifications to your gun, maintaining holster compatibility and natural handling.

FN Five-seveN® Threaded Barrel

A threaded barrel is one of the most valuable upgrades for the FN Five-seveN®, enabling suppressor use while improving precision. The EFK Fire Dragon Threaded Barrel is engineered for performance across Five-seveN® models and includes a 1/2"x28 adapter for broad suppressor compatibility.

• Stainless steel build: strength and long service life
• 10x1mm RH + 1/2"x28 adapter: compatibility with common suppressors
• Tight tolerances: accuracy and reliable cycling
• Heat-treated & corrosion-resistant: durability under heavy use
• Drop-in ready: straightforward installation with a refined finish

Whether you want suppressor compatibility or improved accuracy, the EFK Fire Dragon threaded barrel is the definitive FN Five-seveN® upgrade.

FN Five-seveN® Magazines & Capacity Upgrades

Boosting capacity is one of the most impactful ways to enhance the Five-seveN®. FN Specialties offers both practical extensions and extreme high-capacity options:

• Dorin Technologies +5 Magazine Extension for MRD/MK3
• Dorin Technologies +5 Magazine Extension for USG/MK2
• ProMag 55-Round Drum Magazine

The Dorin +5 extensions deliver the balance of added firepower and carry-friendly ergonomics, while the ProMag 55-round drum provides unmatched capacity for range days and specialty use.

FN Five-seveN® Suppressors

Suppressors for the FN Five-seveN® reduce flash, recoil, and sound signature, giving you greater control and a smoother shooting experience.

GSL Technology FN 57-22 Silencer

The GSL FN 57-22 is purpose-built for the Five-seveN®, offering excellent sound reduction with a lightweight profile. It maintains natural handling and is easy to install.

HuxWrx Flow 22 Ti Suppressor

The HuxWrx Flow 22 Ti uses advanced flow-through technology to reduce backpressure and protect the shooter from gas blowback. Titanium construction keeps weight low while delivering outstanding suppression.

Professional Installation Services

Proper installation is critical for safety and performance. FN Specialties offers professional installation services to ensure your FN Five-seveN® accessories are installed correctly.

Upgrade Your FN Five-seveN® with FN Specialties

FN Five-seveN® upgrades and accessories from FN Specialties provide more capacity, better control, and tailored performance. Browse optics, the EFK Fire Dragon threaded barrel, Dorin +5 extensions, the ProMag 55-round drum magazine, suppressors, and installation services to unlock the full potential of your pistol.