The FX Panthera air rifle is designed in every respect for competition shooting. Its main advantage is therefore extreme accuracy thanks to the first‑class barrel of the FX Superior STX (Smooth Twist X) series – whose rifling is pressed in from the outside. The inner surface of the barrel is therefore smooth and free of any imperfections, which reduces air resistance and projectile friction when firing. At the end of the barrel there is a standard 1/2UNF thread for installing a moderator.
The FX Panthera is manufactured in versions with barrel lengths of 500, 600 and 700mm in calibres 4.5mm, 5.5mm, 6.35mm and 7.62mm.
The air rifle is also equipped with the new Dynamic Block breech designed for shooting slugs at long range. The breech uses a powerful short‑impulse valve that ensures precise flow of a large volume of air. Compared to other breeches, the Dynamic Block allows the use of projectiles up to 13mm long – the magazine with a deeper lid is adapted to this. The side cocking lever can be moved to the left side of the air rifle.
The revolutionary Dynamic Plenum is the first of its kind – it surrounds the barrel and at the same time provides rigidity. The version with a 500mm barrel is equipped with a 62ccm plenum.
The fore-end is equipped with an Arca rail complemented by M-LOK sections on the sides and bottom, which can be used to attach weights, a bipod or a laser sight. It also of course features an adjustable buttpad and a height-adjustable ambidextrous cheekpiece.
The stock also includes a carbon fibre bottle with a volume of 300ccm, which can be filled via a Foster quick‑connect to a maximum pressure of 250 bar.
Note: The muzzle energy values in the air rifle specifications are achieved under ideal conditions and using a tungsten hammer pin. The values with the standard version of the air rifle may therefore differ.