FX Airguns Liner Lock .22 – STX Barrel Jam Nut
S83685
The FX Liner Lock .22 is the threaded jam nut that secures the inner barrel liner at the muzzle end of the FX Smooth Twist X barrel system. In .22 calibre (5.5 mm) it carries part number 19969. The liner lock clamps the liner in place once it has been correctly seated within the outer shroud, maintaining the bore alignment that the STX system relies on for its accuracy. It is used across a wide range of current and recent FX rifles, including the Impact MK2, Impact M3, Impact M4, Wildcat MK2 and MK3, Dreamline, DRS, King, Panthera, Dynamic, Maverick, Crown, Crown MK2, and Leopard. Shooters fitting a replacement liner or moving a .22 liner kit between rifles will need this part to complete the assembly. Tighten to the correct torque during liner installation — refer to the FX liner replacement guide for the full procedure.
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