FX STX Superior Heavy Liner, 600mm, Cal 5.5mm0.22

This FX Superior Smooth Twist X Heavy Barrel Liner (Superior STX Heavy Barrel Liner) will shoot both heavier pellets and heavier slugs with improved performance vs. regular Superior STX barrel liners because of a customized twist rate.

The Superior STX Heavy system was created using the same innovative exterior-pressed rifling, but with tighter tolerances and upgraded techniques and for greater precision.

This 600mm version gives a little more velocity than the shorter versions while keeping the length almost 4 inches shorter than the 700mm version. If you’re looking for an easy way to upgrade your FX air rifle, get a Superior STX Heavy barrel liner and drop it in today.

FX Superior STX Heavy Liner, 600mm, .22 caliber

• Recommended for use with heavy pellets and slugs
• Compatible with FX Crown, Dreamline, and Impact models with 600mm STX barrels
• 1:16 Twist Rate

Specifications