FX Heavy Superior Barrel 

This liner is highly recommended in order to get the best results with heavier grain slugs. In our preliminary testing we have found this liner performs well will slugs needing a faster twist rate to stabilise.

The ground breaking Smooth Twist X barrel liner has been further perfected. FX Airguns proudly introduces the new FX Superior Smooth Twist X Barrel Liner (or FX Superior STX). The new Superior STX barrel liners are still created using the patented way of pressing the rifling into the barrel from the outside; but this is now done with a higher degree of precision, lower tolerance, and some other slight modifications that result in a superior liner to the standard STX liners.

Results are not guaranteed. These are non-returnable products.

Twist Rates:

• .22 - 1:16
• .25 - 1:18
• .30 - 1:16