FX Airguns Wildcat MKIII Air Rifle - 5.5mm, Sniper Barrel

FX Airguns

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SKU: FX100320

Adjustable match trigger
Synthetic stock with soft-touch surface
FX smooth twist X superior liner barrel
Manual safety



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The FX Airguns Wildcat MKIII Air Rifle - 5.5mm Sniper Barrel is a part of airgun royalty. A rifle that was compact before compact became a buzzword in airguns. A perfectly balanced and ergonomically designed bullpup that defined the generation of bullpups that have followed in its footsteps. The FX Wildcat MKIII enhances its legacy as it updates this desired platform for the modern airgunner. The improvements start inside the Wildcats main block. FX has increased the plenum size and air flow of the rifle while also increasing the valving of the Wildcat. The engineering into the new Wildcat block really pushes the boundaries of what can be accomplished with precision CNC engineering.

Adjustments to the Wildcat MKIII are built around the new rear power adjuster. This power adjuster is a breakthrough as it allows for both micro and macro adjustments using the same dial to the hammer spring. The rear power adjuster has 7 pre-sets for your hammer, but the actual hammer tension can be adjusted more fully higher or lower using an Allen wrench through a hole found on the 8th position of the adjuster. This allows the Wildcat hammer to be fully adjusted in harmony with the AMP regulator to allow for the full range of adjustability found in other FX rifles like the FX Impact FX Crown.

The Wildcat MKIII has also upgraded its magazine to allow the use of larger capacity magazines. No longer restrained to 8 shots the Wildcat MKIII now more than doubles its shots using the FX Side-Shot magazine the same magazines as found on the FX Crown and FX Dreamline. All Wildcat MKIII rifles and barrel kits will ship with FXs recently released new Superior STX Barrel Liners. The liners are housed in the STX Interchangeable barrel liner system that allows users to switch to the Superior STX Heavy liner if they want to shoot heavier slugs. The other features of the Wildcat remain intact. The externally adjustable AMP regulator two stage adjustable trigger easily one of the best triggers found on any bullpup and the smooth side cocking lever perfectly positioned above the trigger.



  • Adjustable match trigger
  • Synthetic stock with soft-touch surface
  • FX smooth twist X superior liner barrel
  • Manual safety
  • Pressure gauge for airtube pressure
  • Pressure gauge for regulator pressure
  • Power adjuster hammer spring tension
  • AMP Externally adjustable pressure regulator



Cocking System Forward Positioned Side-lever
Stock Synthetic with soft-touch surface
Magazine Type Removable
Magazine Capacity 18
Calibre 5.5mm / .22
Barrel Length 700mm
Shot Capacity 90 shots 34ft/lbs
Fill Pressure 230 Bar 3300psi
Energy 68 J - 50ft/lbs
Air Capacity 300cc
Air Cylinder Not removable
Length 790mm
Weight 3kg

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