The FX STX Impact II Sniper Barrel is a complete barrel assembly for the FX Impact II Sniper air rifle, supplied in .25 calibre (6.35mm) and measuring 700mm in length. Part of FX Airguns' STX barrel system, it houses a precision STX Superior liner engineered with calibre-specific rifling and twist rates to optimise consistency across the pellet's full travel. The longer 700mm barrel gives .25 shooters a useful step up in muzzle velocity and improves shot-to-shot stability compared to shorter configurations — useful for those running heavier .25 pellets at field or long-range distances. Installation requires no specialist tools; the barrel slots directly into the Impact II Sniper's barrel interface and pairs with the correct .25 calibre pellet probe. Changing calibre or barrel length is a straightforward swap, which is the point of the STX system — letting Impact owners reconfigure the rifle rather than replace it. This listing is for the barrel assembly only; probe, shroud and any additional hardware are sold separately.
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