Description
Features:
- 6061 Aluminum T6
- Black anodized
- 1/2 x 20 male threads
Made by DonnyFL
$50.00

Specifically for the Airacuda Standard or the Max in any Caliber (.22, .25, or .30)
Because this adapter was made to fit both the Standard and Max versions of the AiraCuda, and because of the variations between individual rifles, you may find that one or two threads remain exposed when you snug the adapter in place. This is normal, and will not affect the performance of the rifle. In fact, our testing has revealed that a longer or heavier moderator can be used with less risk of clipping as compared to the endcap-only style adapter. It was necessary to design with this flexibility to overcome the challenges of this airgun’s shroud design so that moderators could be used.
Key Features:
This part is designed and manufactured by DonnyFL
Sold out!
Features:
Made by DonnyFL
| Weight | 5 oz |
|---|---|
| Dimensions | 7 × 1 × 1 in |
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Hajimoto Flex Reg on 22ci Aluminum 3K for the G1
Introducing a Hajimoto Productions Exclusive offer!
22ci/360cc/.36L Aluminum Tank 3000PSI
Newly redesigned unit
Now has a high pressure and low pressure burst discs!

Flex 22 Configuration For Generation 1 Gauntlet .177/.22 Cal
Stock .177/.22 | 3000/1100PSI Regulator
Flex 22 .177/.22 |3000/700 to 1500PSI
Flex 22 Configuration For Generation 1 Gauntlet .25 Cal
Stock .25 | 3000/1900PSI Regulator
Flex 22 .25 | 3000/1500 to 2300PSI
If you are looking to add an externally adjustable reg to your Gauntlet 2, take a look at swapping your current fixed reg to the Flex reg found HERE
Installs on the Gauntlet with minor tank shroud modifications. (The Gauntlet 2 is shown to give an idea of what modification needs to happen and that is simply a hole drilled in the bottom of the plastic tank shroud for the fill nipple.

A 22ci aluminum 3000PSI cylinder with externally adjustable Ninja Flex Reg for your Umarex Gauntlet1! The volume of air in these 22ci tanks over the 13ci is mind-blowing!
The diameter of the tank is 54-55mm across so a modification to the forearm is required on a Gauntlet 1. I do offer a tank shroud modification service for Gauntlet 1 owners that can be added to a build or provided as a mail-in service.
The Gauntlet 2 forearm slide right over without any issue. Only one access hole needs to be drilled so the fill port is accessible at the bottom.
Consider picking up our extended foster fill adapter to make coupling and filling a breeze.
The Power Flex Combo allows the user to externally adjust the regulator output pressure on the fly with an adjustment range of 800PSI!
When installing the Flex 22 on the Umarex Gauntlet. Tighten the degassed tank and regulator assembly fully to the rifle, then back it off until the fill port is on the bottom and the gauges are left and right. Now fill the bottle with air and all will tighten up solid. Proper alignment will be achieved before the 360° maximum rotation limit is realized.
Comes with a dedicated Spanner Wrench for power adjustment. MADE IN THE USA!
Because of practical limitations, regulator output will be +/- 50PSI (3.5bar) within the requested output.
for .177, .22 and .25 NOT .30
Hajimoto Productions Strip Stak Pak for the Gauntlet 1 or 2. Not compatible with the Gauntlet .30 Caliber.
An efficient multiport polymer air stripper that strips and channels air away from the pellet to allow for a more stable and less turbulent pellet launch from the muzzle. The HP Air stripper 2.0 comes with an o-ring. The kit also includes variable baffle chambers to help reduce both noise and turbulence in the airflow. The result is a more laminar air stream, which reduces projectile instability and, as a secondary benefit, reduces the report of the rifle.
BAFFLES CAN NOT BE USED WITH DONNYFL SHORT SHROUD
Because the Short Shroud is cut at a length that is a perfect fit for the air stripper and the spring. There is no room for the baffles in the DonnyFL Short Shroud.
Polymer Air Stripper comes with o-ring and silicone grease for installation.


We completely tune your supplied Gauntlet 1 or 2 Bolt or SL Version, which includes everything listed in the section below.
The service includes a very detailed, time-consuming incoming inspection report with photos and other relevant information detailing the condition of the airgun and all of its parts. This report is provided to you, and it must be reviewed and authorized for the work to continue.
Ordering procedures:
Shortly after the order is received, you will receive an email notification containing shipping information that will include labeling and packaging requirements.
To better understand how the Gauntlet is transformed from a static you get what you get type of airgun into an adjustable-power and tunable PCP, take a look at this video that demonstrates how the power adjuster works if you should want to increase or decrease the power output for any given ammunition to get it to fly at the best rate of travel for that particular ammunition.
HOW TO ADJUST POWER WITH STK
We will build your order based on the information provided from the questionnaire as well as any specific requests, and before the airgun ships, any credits or additional charges will be settled.
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