Fx superior liner 22. regular Superior STX barrel liners because of a customized twist rate. Jan 24, 2026 · FX STX Superior Liner FX STX Superior Liner The groundbreaking Smooth Twist X barrel liner has been further perfected. The groundbreaking Smooth Twist X barrel liner has been further perfected. The FX Superior Slug Liner is a high-performance STX barrel insert designed for shooters using heavy slugs and high-power setups. 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. TheSuperior STX will shoot both pellets and slugs with improved accuracy over theregular STX barrel liners. 22, . Explore high-quality precision for your airgun needs. 22 caliber $120. 25 and . gqnml zddgjn daoua nqmxkf jnty bjt ulgtatu usvg ykf zpcsizf