FX Superior Heavy STX Barrel Liner .22 500mm Pellet/Slug
The FX Superior Heavy Smooth Twist X (STX) barrel liner is a replacement rifled liner for FX PCP air rifles, produced using FX’s patented process of pressing the rifling into the barrel from the outside. This 500mm liner is chambered in .22 calibre and carries a 1:16″ twist rate.
The “Heavy” designation refers to a twist rate optimised for heavier pellets and slugs, as opposed to the standard Superior liner which is better suited for lighter projectiles. This liner is sold separately and does not come included in barrel kits.
It is compatible with FX Impact, Crown, Wildcat, and Dreamline rifle platforms, allowing users to customise their barrel performance based on preferred projectile weight.
| Specification | Detail |
|---|---|
| Calibre | .22 |
| Length | 500mm |
| Twist Rate | 1:16″ |
| Designation | Heavy STX |
| Compatibility | FX Impact, Crown, Wildcat, Dreamline |
FAQ
What is the difference between the Heavy STX and the standard Superior liner?
The Heavy STX liner has a 1:16″ twist rate, optimised for heavier pellets and slugs. The standard Superior liner has a different twist rate suited for lighter projectiles.
Which FX rifle models can use this barrel liner?
This liner is compatible with FX Impact, Crown, Wildcat, and Dreamline platforms.
Is the liner included in any barrel kits?
No, the liner is sold as a standalone accessory and is not included in any barrel kits.
Jane McLean –
Installed the Heavy STX liner on my FX Wildcat and noticed a significant improvement in accuracy with heavier slugs. The twist rate matches well with my preferred ammunition, and the fit is secure and smooth.
Carolyn Kerr –
Works well with my .22 slugs. The barrel feels solid and the consistency in shot grouping is better than with the standard liner. Slightly more expensive, but worth it for heavier loads.
Amy Fisher –
Great choice for those who use heavier pellets. The 1:16″ twist rate provides stable flight and better accuracy. Easy to install and fits perfectly on my Dreamline model.