FX King — High Power PCP Air Rifle

FX King Review — The High Power Sporter

The FX King is a high-power PCP air rifle. It uses the Dynamic block from the Panthera platform. A beautiful GRS laminate stock gives it a traditional sporter look . The King features an over-barrel Dynamic Plenum. This plenum adds stiffness and delivers high airflow for slug shooting . Available barrel lengths are 500mm and 600mm. The 600mm version uses the STX Superior Heavy liner. This liner is optimised for heavy slugs at long ranges .

FX King Power — Energy Levels

The FX King produces serious power. In .22 calibre, it delivers up to 111 Joules. The .25 calibre reaches 123 Joules. The .30 calibre produces a massive 176 Joules. The .35 calibre tops out at 234 Joules . The 600mm barrel version has a 156cc plenum. The 500mm version has a 62cc plenum. The rifle fills to 250 bar. Air capacity is 480cc plus the plenum volume . The AMP Mk2 regulator is fully adjustable. You can also adjust the hammer spring for fine tuning.

FX King Accuracy — What Owners Achieve

Owners report impressive accuracy with the King. One forum user bought a nearly new .22 King. They consistently hit five pence sized targets at 100 yards . Another owner used Zan 25.5 grain slugs at 920 fps. They achieved an extreme spread of just 7 FPS . The 600mm barrel with Superior Heavy liner is key for slug accuracy. The rifle works well with both pellets and slugs. Many owners recommend it as a dedicated slug shooter for long-range work.

FX King Problems — Honest Owner Feedback

The FX King has several known issues worth discussing. One owner reported erratic velocity swings of 80 FPS. The rifle jumped from 920 fps to 1000 fps and back . The dealer replaced the regulator but the problem remained. A forum member correctly diagnosed a bent valve pin. Dry firing the rifle likely caused the damage . The valve pin is part of the high-power system. Do not dry fire your King. Turn the regulator screw 1/4 turn to degas the plenum safely .

Other issues include left-handed shooters finding the gauges on the wrong side. The angled manometers make the rifle wider. They can scratch wood stocks stored nearby . Some owners report that the trigger lockback can be annoying. Aftermarket trigger modifications are available to fix this . A forum member noted that FX’s QC needs a serious overhaul. These are not cheap rifles. Owners should not be the beta testers .

FX King Accessories — Stock and Rail Options

The King uses a GRS laminate stock made in Norway. It comes in Green Mountain, Hunter Brown, and Nordic Wolf finishes . The stock has tool-free push button adjustments. You can adjust the cheekpiece and butt pad for a perfect fit. The stock is right-handed only due to the asymmetric grip angle . The rifle features a 30 MOA Picatinny scope rail. Side Picatinny rails let you mount lights, lasers, and bipods . The Airmarksman Belly Dump rail is a popular aftermarket accessory. It protects the bottle and adds ARCA compatibility . The 1/2 inch UNF threaded muzzle accepts standard silencers.

FX King For Sale UK — In Stock at Fieldcraft Airguns

Fieldcraft Airguns has the FX King in stock now. We offer .177, .22, .25, .30, and .35 calibre models. Both 500mm and 600mm barrel lengths are available. The rifle includes a hard case, fill adapter, and one magazine. Spare 18-shot (.22) magazines are available separately . Due to UK law, we cannot ship this rifle directly to your home. You must collect it from a Registered Firearms Dealer. We can deliver to your local RFD for a small fee. Every FX King comes with our exclusive 12 month warranty. We recommend adding a high-pressure air tank capable of 250 bar fills. Also add a tin of quality slugs — Zan or H&N work well in this platform. Do not dry fire the rifle. This will damage the valve pin and cause consistency issues .