Superior STX Heavy Barrel Liner is a replacement for the original FX liner and is specially developed for the use of 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 Heavy will shoot slugs with improved accuracy over the regular STX barrel liners. A perfect way to upgrade you airrifle, and you can also combine it with our tuning items specially when are are going to shoot slugs like pin probe, slug power kits, high flow transferports etc etc.
