Shopping cart FX STX Superior Heavy Liner The FX Superior STX Heavy Liner is part of the upgraded Smooth Twist X barrel system, designed specifically for use with heavier grain slugs. It offers improved performance thanks to a faster twist rate, making it ideal for stabilizing longer, heavier projectiles. This liner is compatible with the following FX airguns: FX Impact (MKII, M3, M4 etc.) FX Leopard FX Crown FX DRS FX Dreamline Series (Classic, Lite, Tactical, etc.) FX Wildcat MKIII FX Maverick FX King FX Panthera & Dynamic RESULTS ARE NOT GUARANTEED *THESE ARE NON-RETURNABLE PRODUCTS. The .25 Caliber 600mm/700mm along with .177/700mm Superior Heavy Liner has been updated to the Slug Liner, found here. Twist Rates: .177 - 1:16 .22 - 1:16 .25 - 1:18 .30 - 1:16 .35 - 1:24
