Tube 5.5 STX 700mm Slugliner

Tube 5.5 STX 700mm Slugliner

Unleash the full potential of your FX Smooth Twist X platform with the all-new TUBE 5.5 STX 700 mm SlugLiner—precision-engineered around the Nielson Specialty Ammo line of hunting slugs that today’s marksmen demand. From the first shot, you’ll notice tighter groups, flatter trajectories and rock-solid consistency. Developed in collaboration with FX and Utah Airguns and refined through rigorous real-world testing, this SlugLiner sets a new standard for slug performance.

Crafted from aerospace-grade stainless steel and mirror-polished to perfection, the SlugLiner creates an ideal bore environment that “mates” seamlessly with NSA’s match-weight slugs. The result? Instant seal, uniform spin, and that coveted “on-rails” feel as you send each projectile downrange. Whether you’re stalking big game at dawn or pushing for sub-inch groups on the bench, this SlugLiner delivers the repeatable precision you need.

Installation is quick and hassle-free—simply slide the liner into your existing barrel and torque to spec. No gunsmithing required. It’s fully compatible with all FX Smooth Twist X systems, so you can swap between pellets and slugs in minutes. And because FX, Utah Airguns and other experts are continually testing new slug weights, shapes and profiles, you know this liner is future-proofed to handle tomorrow’s innovations.

Ready to elevate your slug-shooting game? Discover why top shooters are choosing the TUBE 5.5 STX 700 mm SlugLiner as their go-to upgrade for long-range accuracy. And don’t forget to explore our full line of FX performance accessories for a complete, customized shooting experience.

Key Features and Specifications

• Caliber: 5.5 mm (0.22″) – optimized for NSA precision slugs
• Length: 700 mm – perfect balance of stability and maneuverability
• Material: aerospace-grade stainless steel – ultra-durable, corrosion-resistant
• Finish: mirror-polished bore – enhances seal, reduces friction
• Compatibility: FX Smooth Twist X series – no gunsmithing required
• Accuracy: engineered to deliver sub-inch groups at 50 yards
• Installation: drop-in design – quick, tool-friendly setup
• Testing: validated by FX, Utah Airguns & field pros – proven in real conditions
• Future-Ready: accommodates evolving slug weights, shapes and profiles
• Warranty: backed by FX’s industry-leading customer support and service
• Elevate every shot with SlugLiner precision—because when the hunt depends on it, you can’t afford anything less.

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