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5/8″-18UNF Threaded Unit
Flex Reg Hajimoto Configurations
Rated 4.00 out of 5$299.00 – $310.00Price range: $299.00 through $310.00Select optionsNOTE: THE NINJA FLEX REGULATOR HAS A LIMITED INVENTORY
Ninja Paintballs’ Flex Reg with Custom Gauntlet Configuration.
Say goodbye to only one fixed output pressure!
The user has an 800 – 1000 psi adjustment swing!
Requires minor forestock modification.
The regulator thread is 5/8-18UNF (Bottle Thread) and Typical Paintball Threads of .825-14 NGO (PCP Thread).
Please note the Flex regulator can be used with any Air, Co2, or Nitrogen driven air gun not just the Gauntlet, providing it has the correct threading.
The Ninja Flex regulator is available in any 900 psi spread to a maximum of 3100 psi output. For the Gauntlet, select the proper configuration.
If you select the Custom Configuration, you will need to use the NOTES above to communicate what you want the maximum output to be. Please note that the highest output the Flex Regulator can be configured for is 3100 PSI, but we can build it to any number below that. Example, a user wants the maximum output of their Flex regulator to be 2800, we will build the regulator so that the adjustable range of that build is 1800 to 2800PSI.How to read the below configurations
Example: Flex Reg .22 | 4500/1600 to 2400 psi
Flex Reg .22 = Regulator Type for .22 caliber
4500/ = The bottle’s maximum fill pressure
1600 to 2400 psi = The output range of the Flex RegFlex Reg Configuration For Generation 1 Gauntlet .177/.22 Cal
Stock .177/.22 | 3000/1100PSI Regulator
Flex Reg .177/.22 |3000/600 to 1500PSIFlex Reg Configuration For Generation 1 Gauntlet .25 Cal
Stock .25 | 3000/1900PSI Regulator
Flex Reg .25 | 3000/1500 to 2400PSIFlex Reg Configuration For Generation 2 Gauntlet .22 Cal
Stock .22 | 4500/1900PSI Regulator
Flex Reg .22 | 4500/1500 to 2400PSIFlex Reg Configuration For Generation 2 Gauntlet .25 Cal
Stock .25 | 4500/2100PSI Regulator
Flex Reg .25 | 4500/1500 to 2400PSIFlex Reg Configuration For G30 Cal
Stock .30 | 4500/2800PSI Regulator
Flex Reg .30 | 4500/2100 to 3100PSIComes with a dedicated Spanner Wrench for power adjustment. MADE IN THE USA!
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Two Bar or Collet Holder Versions
Eaglevision Scope Cam for Firefly 8SE 90°
$299.00 – $495.00Price range: $299.00 through $495.00Select optionsHawkeye FireFly 8SE 90° Nondistortion Camera is optional. Some images show the camera case with the optional open door installed. This is not an included option.
A very high-quality scope camera unit made to support the Firefly. This unit can be ordered in two different image split versions, one that sends 50% to the camera and 50% to the shooter’s eyes to allow for a brighter image to the shooters eye the other version sends 25% to the shooter’s eye and 75% of the image to the camera for the best image capture available. Couple the 25/75 split with the 1/1.8″ 4K lens and you have the best low light scope camera capture that can be had.
Collet Clamp System includes:
- 1 x Side Camera Unit that splits the image for recording. Two Choices split degree.
- 1 x USH-46 the universal scope holder will allow you to connect any of our camera mounting systems to almost any scopes from an outer scope diameter between 40mm-46.5mm.
- 1 x Firefly 8SE case + MUN-1 It allows you to connect the Firefly 8SE. The Firefly 8SE setup has a non distortion lens so, unlike the GoPro setup, no lens swap is required!
- 1 x storage case the new waterproof case will allow you to store your camera mounting system tidy and safe.
Two Bar System includes:
- 1 x Side Camera Unit that splits the image for recording. Two Choices split degree.
- 1 x 2B-USH.
- 1 x 2B-UCH.
- 1 x Firefly 8SE case + MUN-1 It allows you to connect the Firefly 8SE. The Firefly 8SE setup has a non distortion lens so, unlike the GoPro setup, no lens swap is required!
- 1 x storage case the new waterproof case will allow you to store your camera mounting system tidy and safe.
Here is a high quality installation video from AirBuks that details the installation process of the Two Bar system. Installation of the FireFly or GoPro is the same.
Please be sure to visit his awesome YouTube channel for some really great airgunning content.
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Flex Reg on 13ci Aluminum 3K
Gauntlet Flex Reg with 13ci Tank – Hajimoto Configurations
$310.00 – $325.00Price range: $310.00 through $325.00Select optionsIntroducing a Hajimoto Productions Exclusive offer!
13ci/213cc/.21L Aluminum Tank 3000PSI
Newly redesigned unit
Now has a high pressure and low pressure burst discs!

Flex 13 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 | 3000/1600 to 2400PSIInstalls on the Gauntlet with minor tank shroud modifications.

A 13ci aluminum 3000PSI cylinder with externally adjustable Ninja Flex Reg with typical G1/2-14 threads connects to your Umarex Gauntlet 1 or Gauntlet 2 without any modifications!
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 13 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 Flex Reg on 22ci Aluminum 3K for the G1
Gauntlet Flex Reg with 22ci Tank – Hajimoto Configurations
$350.00Select optionsIntroducing 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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Sale!
TD 5-30X56 FFP 34mm W/Zero Stop
WestHunter TD 5-30X56 SFIR FFP Scope
Select options$440.00Original price was: $440.00.$351.00Current price is: $351.00.The Westhunter TD 5-30X56 SFIR FFP
Package includes:
- Scope
- 1 set of 34mm Picatinny Scope Rings
- Sunshade
- Large focus wheel.
- Front and rear flip-up lens covers
- Illuminated reticle battery
- Lens Cloth
Features
- First Focal Plane means reticle and target grow equally in magnification making holder calculations simple.
- Massive 30x Magnification
- Incredibly large 56mm objective lens
- As close as 10 yards on the focus
- Zero Stop Turret.
- Click value for Elevation/Windage is 1/10 MIL, excellent shockproof performance, handles recoil of a .300 Win Magnum.
- Illuminated etched reticle with six levels of brightness.
- Fully multi-coated high transmission glass increases light transmission, providing sharp, bright images.
- Featuring quick-reset turrets with stretch lockdown, no tool adjustable with MIL crisp audible clicks that allow quick reset to zero after sighting in.
- Made of anodized 6061 aircraft-grade aluminum alloy, sealed nitrogen-charged tube, shockproof, waterproof, and fog proof.
- Superior TD image clarity makes this a slam dunk when it comes to value for the dollar.
Here is a link to instructions for the ZERO STOP FEATURE
Specifications listed below
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Sale!
Complete with Cylinder, Power Plenum, Bottle Adapter and Barrel Band!
Avenger Power Pak Bundle
$360.00 – $560.00Price range: $360.00 through $560.00Select optionsIntroducing the Hajimoto Productions Air Venturi Avenger Bottle Conversion Power Pak Bundle!
You get everything you need to convert your Avenger into a lean mean bottle toting machine in days not weeks.
In the Bundle you get:
- User selected .30Liter (300cc), .50Liter (500cc), .58Liter (580cc), or .70Liter (700cc) 4500PSI Alsafe Carbon Fiber CE Certified Cylinder
- Doux Technologies Stainless Steel Bottle Adapter Kit
- Doux Technologies Power Plenum
- Hajimoto Productions Barrel Band with Picatinny Rail for your Bipod
Bundles save you big money!
You receive all your parts in one box typically in 4 days or less …….. not weeks!
INSTALL VIDEOS LISTED BELOW
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NEW MODEL
Ninja/UX X-Reg on a 22.5ci/370cc/.37L CE Certified CF Tank
Ninja/UX X-Reg on 370cc Carbon Fiber Bottle
$365.00Select optionsALL NEW!
Direct replacement with no modifications required for the Umarex Gauntlet 2 and Gauntlet 30 Cal!
22.5ci/370cc/.37L CE Certified CF Tank
Shaves off 1/2 a pound of weight compared to the 4500psi stock aluminum tank.
Includes the UX/Ninja X-Regulator.
The CF Tank is CE Certified, made to ISO 11119-3 standard. The cylinder has a seamless aluminum alloy 6061 liner wound with high-strength Japan-imported carbon fiber and glass fiber reinforced plastic full composite layers and subjected to an autofrettage pressure. This 4500 PSI carbon fiber bottle is 22.5ci and is gorgeous on the Gauntlet series of PCP.
The Gauntlet 1 will need the inside diameter of the tank shroud increased slightly to allow the foregrip/tank cover to slide over this carbon fiber tank, or simply remove the tank shroud.
Operating Pressure Recommendations
Gauntlet 1:
.177/.22 Stock operating pressure 1100PSI Max Recommended pressure is 1400PSI.
.25 Caliber Stock operating pressure 1900PSI Max Recommended pressure is 2300PSI.
Gauntlet 2:
.22 Stock operating pressure 1900PSI Max Recommended pressure is 2150PSI.
.25 Caliber Stock operating pressure 2100PSI Max Recommended pressure is 2400PSI.NINJA REGULATORS ARE MADE IN THE USA!
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Flex reg and 22.5ci/370cc/.37L CE Certified CF Tank
Power Flex Combo 22.5ci Carbon Fiber 4500PSI
$425.00 – $435.00Price range: $425.00 through $435.00Select optionsIntroducing a Hajimoto Productions Exclusive offer!
22.5ci/370cc/.37L CE Certified CF Tank (Available in matte or glossy finish)
Newly redesigned unit
Now has a high pressure and low pressure burst discs!

Installs on the Gauntlet 2 with minor tank shroud modifications, forearm slides right over the carbon fiber cylinder. Installation video at the bottom of the page.



The CF Tank is CE Certified and made to ISO 11119-3 standard. They have seamless aluminum alloy 6061 liner wound with high strength Japan-imported carbon fiber and glass fiber reinforced plastic full composite layers and subjected to an autofrettage pressure. This included a 22.5ci carbon fiber 4500PSI cylinder with externally adjustable Ninja Flex Reg for your custom build including the Umarex Gauntlet 1 or Gauntlet 2! The massive volume of air in these 22.5ci tanks 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.
Please be careful if you have accessories on any of the M-Lok openings as the screws or MLok fasteners may protrude into the tank area and scratch the tank when the shroud is slid forward or back. We recommend that if you have any MLok accessories installed, you remove them when sliding the shroud on or off. We also recommend covering the brass inserts in the tank shroud with cloth tape to protect your carbon fiber finish.
The Gauntlet 2 forearm slides right over without any issue. Only one access hole needs to be drilled so the fill port is accessible at the bottom. See photo below

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 regulator 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 +/- 75PSI to the requested output.
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Flex reg and 30ci/500cc/.5L CE Certified CF Tank
Power Flex Combo 30ci/.5L Carbon Fiber 4500PSI
$425.00 – $470.00Price range: $425.00 through $470.00Select optionsPlease note that this combo will not fit a Gauntlet or Gauntlet 2 as the tank diameter is larger than the rifle’s tank shroud will allow. This combo is intended for builds that do away with the tank shroud or to be used on other PCP’s that allow for a typical paintball regulator installation.
Introducing a Hajimoto Productions Exclusive offer!
30ci/500cc/.5L CE Certified CF Tank
Newly redesigned unit
Now has a high pressure and low pressure burst discs!

The CF Tank is CE Certified made to ISO 11119-3 standard. They have seamless aluminum alloy 6061 liner wound with high strength Japan-imported carbon fiber and glass fiber reinforced plastic full composite layers and subjected to an autofrettage pressure. This includes a 30ci/500cc/.5L CE Certified 4500PSI cylinder with externally adjustable Ninja Flex Reg for your custom build.
The Power Flex Combo allows the user to externally adjust the regulator output pressure on the fly with an adjustment range of 900PSI!
Comes with a dedicated Spanner Wrench for power adjustment. MADE IN THE USA!
Because of practical limitations, regulator output will be +/- 75PSI (3.5bar) within the requested output.
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500cc CF Tank with Adjustable Reg
Flex Reg RTI Version & Tank
$425.00Select optionsFlex Reg designed and configured specifically for RTI PCP’S such as Prophet, Priest, & Priest 2
This Flex Reg comes paired with a brand-new Carbon fiber 4500PSI tank. The regulator is externally adjustable and has an effective adjustable range of 900PSI (62bar).Using the slider you select what the maximum output will be and because the regulator has the ability to adjust, you can reduce that maximum output pressure down as much as 900PSI (62bar). You can of course set the pressure anywhere along that 900PSI (62bar) range to suit your tuning requirements. The regulator will not have a pin or ball seal in the bonnet. The tank cannot be removed while under pressure and must be degassed.
Because of practical limitations, regulator max output will be +/- 50PSI (3.5bar) within the requested maximum output.
Comes with a spanner wrench for adjusting the output on the fly.
** This regulator is 5/8″-18UNF threaded and will not fit M18 threaded bottles. This configured Reg is not sold separately.
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Sale!
HP G30 Copper
Hajimoto Gauntlet 30 – Copper Package
$450.00 – $660.00Price range: $450.00 through $660.00Select optionsThis is the Copper Gauntlet 30 caliber build.
All of the packages we offer whether it is the Ultimate Package or the simple Copper Package, all ship to you after we completely check and verify that the rifle is not leaking, all fasteners are checked, and the entire rifle is inspected for missing parts or damage.
We make sure the action is performing correctly as well as shooting the rifle three times and reporting the shot string details and target.
The barrels are inspected and thoroughly cleaned prior to shooting so when you receive your dirty 30 is ready to deliver some hurty!
What you get in this Package:
- 1 new Umarex Gauntlet 30 Caliber ready to go.
- Optional externally adjustable regulator which comes with the extended fill fitting.
- Optional Build with Umarex Sidelever Cocking
See below for a detailed breakdown of what is included.
Ordering procedures:
You will add any and all items to your cart including this Turnkey Gauntlet 30 caliber. Please use the notes section to communicate any special requests like trigger preferences.Lastly, if an item you want is out of stock and therefore you are unable to add it to the cart, you can use the notes section to request the item as part of your build and we will settle up before the airgun ships.
When I receive this order, I will build it based on the information provided, and before the airgun ships, any credits or additional charges need to be settled.
























