FX STX Superior Smooth Twist X Liner
This FX Superior Smooth Twist X Barrel Liner or Superior STX Barrel Liner is a replacement for the original FX liner and is specially developed for the use of pellets and and FX Hybride Slugs.
They are created using the same patented innovative exterior-pressed rifling, but using upgraded techniques and tighter tolerances for greater precision.
The Superior STX will shoot both pellets and hybrid slugs with improved accuracy over the regular STX barrel liners.