FX Airgun’s Premier Bullpup Air Rifle

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 perfects its legacy as it updates this coveted platform for the modern airgunner. The enhancements start inside the Wildcat’s block. FX has increased the plenum size and airflow while also increasing the valving of the Wildcat. The engineering into the new Wildcat block pushes the boundaries of what we can achieve with precision CNC engineering from FX Airguns.

FX Wildcat MKIII Compact


FX Wildcat MKIII Sniper


Adjustments to the Wildcat MKIII are within the new Advanced Rear Hammer Dial or ARH dial for short. This hammer adjuster is a breakthrough as it allows micro and macro adjustments using the same dial. The ARH Dial has seven presets for your hammer, but the actual hammer tension can be adjusted fully up or down using an Allen wrench through a hole found on the 8th position of the adjuster. Ease of adjustments allows the Wildcat hammer to be fully adjusted to match any caliber you wish to shoot (additional barrel kits will be available).

The Wildcat MKIII has also upgraded its magazine to allow larger capacity magazines. No longer restrained to 8 shots, the Wildcat MKIII now more than double the shots using the FX Side-Shot magazine (the same magazines as found on the FX Crown and FX Dreamline).

All Wildcat MKIIIs will ship with FX’s new Superior STX Barrel Liners. The liners in the STX Interchangeable barrel liner system will allow users to switch to the Superior STX Heavy liners to shoot heavier projectiles like Slugs.
Outside of the Picatinny scope rail that is now standard on all Wildcats, 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 is positioned perfectly above the trigger.

The Wildcat MKIII comes in two configurations, The Wildcat MKIII Compact with its 500mm barrel in calibers .177 thru .30; and the Wildcat MKIII Sniper that houses a larger 300cc air cylinder and a 700mm barrel in calibers .22, .25 & .30. All rifles are available in a synthetic stock with shrouded barrels that are moderator ready with ½” UNF threading (Moderator sold separately).

FX Wildcat MKIII Specs

Cocking System: Sidelever
Magazine Type: Removable Side-Shot Magazine
22 shot when Cal .177
18 shot when Cal .22
16 shot when Cal .25
13 shot when Cal .30
Stock Synthetic
Caliber .177 Caliber
.22 Caliber
.25 Caliber
.30 Caliber
Barrel FX Smooth Twist X with FX Superior STX Barrel Liner
Length 500mm (Compact)
Length 700mm (Sniper)
Shot Capacity Compact
.177 Cal up to – 120 shots
.22 Cal up to – 60 shots
.25 Cal up to – 35 shots
.30 Cal up to – 18 shots
.22 Cal up to – 90 shots
.25 Cal up to – 55 shots
.30 Cal up to – 35 shots
Fill Pressure Max 220 bar
Safety Manual
Optics Picatinny
Muzzle Built-in shroud with threading for additional moderator (not included) ½” UNF threading
Pressure Guages One for airtank pressure
One for regulator pressure
Trigger Adjustable Match Trigger
Energy Compact
.177 Cal up to 20 ft/lbs
.22 Cal up to 40 ft/lbs
.25 Cal up to 55 ft/lbs
.30 Cal up to 70 ft/lbs
.22 Cal up to 50 ft/lbs
.25 Cal up to 70 ft/lbs
.30 Cal up to 85 ft/lbs
Air Capacity 230cc (compact)
300cc (Sniper)
Air Cylinder Aluminum
Length 680mm (Compact)
900mm (Sniper)
Weight 6 lbs (Compact)
6.75lbs (Sniper)
Charging Fill Probe
More Features Interchangeable Barrel Liner System
AMP Externally adjustable pressure regulator
Advanced Rear Hammer (ARH) Dial

The Original Iconic Bullpup 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 various shapes and sizes. The form and function of this epic airgun have made it the favorite off-hand hunting PCP over the last seven years. The enhanced power comes courtesy of the massive 89cc Power Plenum, nestled in the stock of the Wildcat. This large plenum caters to slug and heavy pellets. Effectively extending both the muzzle energy and thus the range in which you can use this new and powerful Wildcat. (The standard Wildcat MKIII better serves those preferring classic-sized pellets). 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. Dual aMP regulators provide less stress and allow 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 target practice in the backyard. This rear power adjuster allows quick micro and macro adjustments to fine-tune the desired speed for your shooting projectile. The FX Wildcat MkIII BT comes in three configurations: The Compact with a 300cc carbon fiber bottle and 500mm barrel, The Sniper with a 580cc carbon fiber bottle and 700mm barrel, and the value-priced VP with a 400cc aluminum bottle and 600mm barrel. Additional barrel kits in calibers .177 thru .30 are sold separately and are easily interchangeable. FX Wildcat owners also can use 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 off-hand 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.

FX Wildcat MKIII BT Compact


FX Wildcat MKIII BT Sniper




FX Wildcat MKIII BT Specs

Cocking System: Forward Positioned Sidelever
Magazine Type: Removable Sideshot Magazine
18 shots - .22 cal
16 shots - .25 cal
13 shots - .30 cal
Stock Synthetic
Picatinny Accessory Rail
Caliber 5,5 (.22)
6,35 (.25)
7,62 (.30)
Barrel FX Smooth Twist X Superior Liner
Compact: Length 500mm
5,5 (.22)
6,35 (.25)
7,62 (.30)
VP Edition: Length 600mm
5,5 (.22)
6,35 (.25)
7,62 (.30)
Sniper: Length 700 mm
5,5 (.22)
6,35 (.25)
7,62 (.30)
Shot Capacity Compact
.22 Cal: approx. 110 shots
.25 Cal: approx. 70 shots
.30 Cal: approx. 35 shots
.22 Cal: approx. 270 shots
.25 Cal: approx. 170 shots
.30 Cal: approx. 90 shots
Note: above figures obtained based using factory recommended velocities for standard pellets in each caliber
Fill Pressure Max 250 bar (Carbon Fiber Bottle)
Max 230 bar (Aluminum Bottle)
Safety Manual
Optics Picatinny Mount
Muzzle Built-in shroud with threading for 1/2" UNF moderator
Pressure Guages One for bottle pressure
One fo regulator pressure
Trigger Adjustable Match Trigger
Energy Compact
.22 Cal: up to 52 ft/lbs
.25 Cal: up to 63 ft/lbs
.30 Cal: up to 93 ft/lbs
.22 Cal: up to 69 ft/lbs
.25 Cal: up to 82 ft/lbs
.30 Cal: up to 113 ft/lbs
Air Capacity Compact - 300cc Sniper - 580cc
VP Edition - 400cc
Air Cylinder Removable Carbon-Fiber Bottle
(VP – Aluminum Bottle)
Length Compact - 500mm
VP Edition - 600mm
Sniper - 700mm
Weight Compact 6.3 lbs
Sniper 7.2 lbs
VP Edition - 7.45 lbs
Charging Foster Quick Disconnect
More Features Power adjuster (hammer spring tension)
Interchangable Caliber System
Dual AMP Regulators, fully adjustable