WILDCAT MKIII • New Release 2022! 

The Wildcat family just got bigger as the original iconic bullpup got infused with power & more air!

Introducing the new and vastly improved FX Wildcat MkIII BT!

The iconic airgun bullpup, the FX Wildcat, now comes with power and air capacity to handle slugs and heavier pellets in all their various shapes and sizes. The form and function of this epic airgun has made it the favorite off-hand hunting PCP the last 7 years.  

The enhanced power comes courtesy of the massive 89cc Power Plenum, nestled in the stock of the Wildcat. This large plenum really caters towards slug and heavy pellets. Effectively extending both the muzzle energy and thus the range in which you can use this new and powerful Wildcat. (Those preferring classic sized pellets are better served by the standard Wildcat MKIII).  

Taming this massive power center and refining accuracy, is accomplished using dual FX AMP Regulators. The first AMP regulator is placed just after the carbon fiber bottle (aluminum bottle on the lower priced VP version) to reduce the initial pressure in preparation for the second regulator. This provides less stress as well as allowing the use of 300 BAR bottles. The second AMP regulator allows the precise amount of air needed for consistency with each shot. Combined with the world’s most competition winning barrel system (the FX Smooth Twist X Barrel System), this ensures you have the most accurate rifle possible in your hands! 

Complete adjustability is in your hands with the Wildcat MkIII BT! Both regulators are externally adjustable, and the rear power adjuster makes dialing in the right power easy to adjust for shifting hunting situations. A shooter can shift from the higher speeds needed for a long outdoor shot to dialing down the power for a shot taken in a barn or for target practice in the backyard. This rear power adjuster also allows quick micro and macro adjustments to fine tune the desired speed for the projectile you are shooting. 

FX Wildcat owners also have the option of using the FX Wildcat Slug Power Kit (sold separately) that allows for even more power and velocities to tailor to heavier projectiles.

The original iconic Wildcat completely changed the airgun world, offering the perfect offhand shooting air rifle. The Wildcat MkIII BT perfectly matches the advances to slugs and heavier pellets the modern shooter desires, ushering in a new generation to the brilliance of the FX Wildcat.

Wildcat MkIII BT Compact
Comes with 500 mm barrel and 300 cc carbon fiber bottle.

Wildcat MkIII BT VP (valued price)
Comes with 600 mm barrel and 400 cc aluminum bottle.

Wildcat MkIII BT Sniper
Comes with 700 mm barrel and 580 cc carbon fiber bottle.
Additional barrel kits in calibers .177 thru .30 are sold separately and are easily interchangeable.

WILDCAT MKIII Standard (released may 2020)

The FX Wildcat 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 Wildcat’s 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 presets 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. This also allows for shooters to swap calibers quickly and easily (additional barrel kits will be available).

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 will ship with 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.

Limited Offer 2023
Refurbished Wildcat MkII stocks to suit MkIII action in Laminate and Walnut available as limited offer as long as stock last.

Wildcat MkIII Standard Compact
Comes with 500 mm barrel.

Wildcat MkIII Standard Sniper
Comes with 700 mm barrel and a larger 300 cc air cylinder.

Note: Muzzle energy listed in the specifications of each rifle is for maximum setting. Due to differences in regulations the rifle is often produced with a lower muzzle energy from the factory. Contact your dealer for more info about muzzle energy in your region.

Cocking system Forward positioned sidelever
Magazine type Removable high capacity, easy load.

Made in durable injection-molded POM

22 shot when Cal .177

18 shot when Cal .22

16 shot when Cal .25

13 shot when Cal .30

Stock Synthetic with soft-touch surface.

Laminate: Limited Offer 2023

Walnut: Limited Offer 2023

Safety Manual
Optics Picatinny rail
Muzzle Built-In Shroud system with ½” UNF thread
(variations may occur depending on country).
Pressure Gauge One for airtube pressure.
One for regulator pressure.
Trigger Adjustable match trigger.
Caliber 4,5 (.177)

5,5 (.22)

6,35 (.25)

7,62 (.30)

Shot Capacity Standard Compact:
4,5 (.177) ≈ 120 shots @ 20ft/lbs. ≈ shots @ 12ft/lbs TBA
5,5 (.22): ≈ 60 shots @ 30ft/lbs. ≈ shots @ 12ft/lbs TBA
6,35 (.25): ≈ 35 shots @ 55ft/lbs.
7,62 (.30): ≈ 18 shots @ 67ft/lbs.Standard Sniper:
5,5 (.22): ≈ 90 shots @ 34ft/lbs.
6,35 (.25): ≈ 55 shots @ 47ft/lbs.
7,62 (.30): ≈ 35 shots @ 75ft/lbs.

BT Compact:
4,5 (.177) ≈ shots @ 20ft/lbs TBA
5,5 (.22): ≈ 110 shots @ 860fps (18,1gr pellet)
6,35 (.25): ≈ 70 shots @ 895fps (25,4gr pellet)
7,62 (.30): ≈ 35 shots @ 860fps (44,8gr pellet)

4,5 (.177) ≈  shots @ 20ft/lbs TBA
5,5 (.22): ≈ 160 shots @ 860fps (18,1gr pellet)
6,35 (.25): ≈ 100 shots @ 895fps (25,4gr pellet)
7,62 (.30): ≈ 55 shots @ 860fps (44,8gr pellet)

BT Sniper:
4,5 (.177) ≈  shots @ 20ft/lbs TBA
5,5 (.22): ≈ 270 shots @ 860fps (18,1gr pellet)
6,35 (.25): ≈ 170 shots @ 895fps (25,4gr pellet)
7,62 (.30): ≈ 90 shots @ 860fps (44,8gr pellet)




Standard Compact: 

4,5 (.177): up to 27 Joule – 20ft/lbs.

5,5 (.22): up to 55 Joule – 40ft/lbs.

6,35 (.25): up to 75 Joule – 55ft/lbs.

7,62 (.30): up to 95 Joule – 70ft/lbs.

Standard Sniper: 

5,5 (.22): up to 68 Joule – 50ft/lbs.

6,35 (.25): up to 95 Joule – 70ft/lbs.

7,62 (.30): up to 115 Joule – 85ft/lbs.

BT Compact:

4,5 (.177): TBA.

5,5 (.22): up to 70 Joule – 52ft/lbs (26gr slug @ 945fps).

6,35 (.25): up to 85 Joule – 63ft/lbs (43,5gr slug @ 810fps).

7,62 (.30): up to 126 Joule – 93ft/lbs (65,5gr slug @ 800fps).


4,5 (.177): TBA

5,5 (.22): up to 87 Joule – 64ft/lbs (34gr slug @ 920fps).

6,35 (.25): up to 105 Joule – 77ft/lbs (43,5gr slug @ 895fps).

7,62 (.30): up to 140 Joule – 104ft/lbs (65,5gr slug @ 845fps).

BT Sniper: 

4,5 (.177): TBA

5,5 (.22): up to 93 Joule – 69ft/lbs (34gr slug @ 955fps).

6,35 (.25): up to 110 Joule – 82ft/lbs (43,5gr slug @ 920fps).

7,62 (.30): up to 153 Joule – 113ft/lbs (65,5gr slug @ 880fps).


AIR CAPACITY Standard Compact:

230 cc

Standard Sniper:

300 cc

BT Compact: 



400 cc

BT Sniper:

580 cc


Aluminum, Not removable

Compact BT and Sniper BT:

Carbon Fiber, removable


Aluminum, removable

Fill PRESSURE Standard and VP BT:

230 bar

Compact BT and Sniper BT:

250 bar

CHARGING Standard versions: 

Quick charge system MkI (probe)

BT Version:

Quick charge system MkII (foster)

Length Compact: 

670 mm


790 mm


890 mm