The FX Panthera air rifle is in every respect designed for competition shooting. Its main advantage is therefore extreme accuracy thanks to the top‑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 without any imperfections, which reduces air resistance and projectile friction during the shot. At the muzzle there is a standard 1/2UNF thread for mounting 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 long‑range shooting with slugs. 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 in length – the magazine with a deeper lid is adapted to this as well. 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 also reinforces it. The version with a 600mm barrel is equipped with a 156ccm plenum.
The forend is equipped with an Arca rail complemented by M-LOK sections on the sides and bottom, to which weights, a bipod or a laser sight can be attached. It is also equipped with 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 coupling 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. Values with the standard version of the air rifle may therefore differ.