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$310.00
This is the service that is included with the Gauntlet 1 Platinum Package as well as the Gauntlet 2 Gold, Platinum, and Ultimate packages. The service is an add-on for lower airgun package offerings that run the rifle through a series of shooting exercises in order to capture and chart power generation and accuracy. This service produces the actual targets shot by your rifle at 25 and 50 yards on 2″ targets. The responses that you provide during the questionnaire are what we use during the final adjustment and execution phases.
You will receive a detailed build sheet that captures every detail of what was performed on your air rifle. You will also receive a detailed data matrix and range result sheet which has the power generation matrix with different ammo weights, feet per second, foot-pounds of energy developed, and what the power adjuster was set to in order to develop those results.
These data sheets become a quick reference for baseline performance data that you can always refer to in order to understand where your power adjuster should be in order to achieve the stated results.
Related products
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Hajimoto Flex Reg on 22ci Aluminum 3K for the G1
Gauntlet Flex Reg with 22ci Tank – Hajimoto Configurations
$350.00Select options This product has multiple variants. The options may be chosen on the product pageIntroducing 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 1500PSIFlex 22 Configuration For Generation 1 Gauntlet .25 Cal
Stock .25 | 3000/1900PSI Regulator
Flex 22 .25 | 3000/1500 to 2300PSIIf 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.
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Hajimoto Tune My Gauntlet G1 or G2
$625.00Select options This product has multiple variants. The options may be chosen on the product pageWe completely tune your supplied Gauntlet 1 or 2 NON SL Version, which includes everything listed in the section below.
The service includes a very detailed and time-consuming incoming inspection report that includes photos and other relevant information that detail the condition of the airgun and all of its pieces and parts. This report is provided to you and you must be reviewed and authorized in order for the work to continue.
Ordering procedures:
- Add all services and items to your cart.
- Be sure to use the notes section to communicate any known issues or special instructions.
- Check out.
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 in order to get it to fly at the best rate of travel for that particular ammunition.
HOW TO ADJUST POWER WITH STKWe 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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for .177, .22 and .25 NOT .30
Umarex Gauntlet Short Shroud with 1/2 x 20 Adapter
Rated 5.00 out of 5$60.00Select options
Part fits Umarex Gauntlet 177, .22 or .25. Not compatible with the Gauntlet .30 Caliber.
This part is designed and manufactured by DonnyFL






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