The FX King with a synthetic stock builds on the legacy and technological innovations of past FX air rifles to create an instant classic. With a focus on maximizing hunting results, this airgun includes the renowned FX tuning adjustments that help shooters get the best performance possible for a specific projectile and situation

This airgun has a synthetic stock with an adjustable rubber recoil pad. The air rifle also provides a number of adjustable features, including the two-stage adjustable match trigger and Quick Tune System for macro and micro adjustments to the hammer spring tension.

The 500 model of this air rifle uses a barrel with a Superior STX barrel liner, and the 600 model uses a Superior Heavy STX barrel liner, both of which produce accurate shots and balance a high shot count with impressive power. This combines with the improved valving compared to older designs and allows it to excel at using both pellets and slugs, a versatility that is especially useful for hunting

The FX King comes with dual angled WIKA gauges on the block, which makes it very easy to monitor both the bottle pressure and the regulated pressure without having to move or turn the air rifle. The AMP MKII regulator works in concert with the over-the-barrel Dynamic Plenum and the Dynamic Block to provide incredibly consistent performance from each shot every time.

The Picatinny optics rail on this air gun includes a 30 MOA (9 MIL) angle to deliver improved long-range accuracy, and it has markings on the right side of the rail to help with quickly repositioning optics. The air rifle also has Picatinny accessory rails on both sides of the forearm for adding items such as lasers and lights.

• .30 calibre (7.62mm)
• Reversible sidelever
• Synthetic stock
• Removable 480cc carbon fiber wrapped bottle
• 156cc Magnum XL Plenum (600)
• High-power, short impulse valve Dynamic Block
• Over-the-barrel Dynamic Plenum design
• Quick Tune System
• Fill pressure: 250 BAR/3,625 PSI
• Shots per fill (600): 56 (.30)
• Max. energy (600): 130 FPE (.30)
• Magazine capacity: 13 (.30)
• Standard Side Shot magazine with deeper .51" lid for longer slugs
• Superior Smooth Twist X barrel
• Superior Heavy STX barrel liner 
• Adjustable hammer tension power wheel
• AMP MKII (Adjustable Match Precision) regulator
• 2-stage adjustable match trigger
• Dual angled WIKA gauges: bottle and regulated pressure
• Picatinny optics rail with 30 MOA/9 MIL angle
• Dual Picatinny forearm accessory rails
• Tool-free adjustable rubber recoil pad
• Foster Quick-Disconnect fill port with dust cap
• Manual switch safety
• Barrel length: 600mm/23.6" 
• Overall length: 43.5"
• Weight: 7.4 lbs. (600)
• Includes tailored cut-out case