Original price was: $39.99.$35.00Current price is: $35.00.
Stak Pak for Hatsan QE shrouds (.357 & .457 Not Included)
Simply unscrew your shroud end cap, remove the two felt-covered stock baffle assemblies, remove the two aluminum stand-off chambers, and install the Hajimoto Stak Pak. No tools, no modifications, just a simple one-for-one swap! Some model Hatsans will use all the baffles others will need one less full-sized baffle, be sure to use both shorter baffles and leave out the full-sized one. If you need to leave one out, leave out the very first full-sized baffle and then arrange the stack as shown in the packaging.
A ten-piece kit that directly replaces the two hair curler style baffles that come inside any Hatsan that has a QE shroud system, excluding .357 & .457 models. The bundle has nine baffle chambers to help remove both noise and turbulence in the air stream. The baffle stack rides on a high tension compression spring allowing for a perfect fit for any Hatsan QE PCP, excluding .357 & .457 models.
The end result is a more laminar air stream which reduces projectile instability and substantially changes the sound of the report of the rifle. This kit is 100% compatible with the stock end cap or the DonnyFL A24 adapter.
The HP Stak Pak is designed to work with the following QE designations:
and more!
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5/8″-18UNF Threaded Unit
Ninja Paintballs’ Flex Reg with Custom Gauntlet Configuration.
Say goodbye to only one fixed output pressure!
The user has an 800 – 900 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 but for the Gauntlet select from 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.
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 Reg
Flex Reg Configuration For Generation 1 Gauntlet .177/.22 Cal
Stock .177/.22 | 3000/1100PSI Regulator
Flex Reg .177/.22 |3000/600 to 1500PSI
Flex Reg Configuration For Generation 1 Gauntlet .25 Cal
Stock .25 | 3000/1900PSI Regulator
Flex Reg .25 | 3000/1500 to 2400PSI
Flex Reg Configuration For Generation 2 Gauntlet .22 Cal
Stock .22 | 4500/1900PSI Regulator
Flex Reg .22 | 4500/1500 to 2400PSI
Flex Reg Configuration For Generation 2 Gauntlet .25 Cal
Stock .25 | 4500/2100PSI Regulator
Flex Reg .25 | 4500/1500 to 2400PSI
Flex Reg Configuration For G30 Cal
Stock .30 | 4500/2800PSI Regulator
Flex Reg .30 | 4500/2100 to 3100PSI
Comes with a dedicated Spanner Wrench for power adjustment. MADE IN THE USA!
Part fits either the original Gauntlet or the Gauntlet 2
THESE BAFFLES CANNOT BE USED INSIDE THE DONNYFL SHORT SHROUD.
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.
duvalier –
Hi guy’s, after a few months of experimenting and going through trial and error, I finally hit the jackpot on a great combination to quiet down my HATSAN AIRMAX bark.
The QE shroud is good but when you pull out the baffles and put in the “HP Stak Pak For Hatsan QE”… ITS A TOTAL GAME CHANGER!!
The sound report on the gun is super quiet and the accuracy remains intact. But the hair pulling surprise is when you pair up this STAK PAK with a DONNYFL SUMO with a higher caliber on your existing one, you get a: TICK FART… I even thought my gun broke or I ran out of air.
My existing setup now is the QE shroud with the “HP Stak Pak For Hatsan QE” for quiet iguana hunting, and the DonnyFL SUMO paired with the QE adapter for extreme quiet barn pest control on Pigeons. They don’t even know what hit them.
I give this product a five star ⭐️⭐️⭐️⭐️⭐️
Happy shooting y’all.
aot56 (verified owner) –
Been trying to make my .30 Cal Hatsan Bully some what backyard friendly ever since I’ve had it. Have tried multiple configurations with the QE baffle systems and tried detuning it to 80 FPE to quiet it down with a DonnyFl Emperor to no avail. Was game to try these baffles as a last ditch effort or I was going to sell it. Got these put in 8 of the 10 baffles received ( wouldn’t take anymore with the included spring) there was a difference in t he report but not enough. Then put the DonnyFl Emperor on and wow what a difference. I know a lot of people say that with this or that lDC you can just hear the sound from the action. But with this set up, mine is just that. The sound from the action makes more noise than what’s coming out of the business end of the barrel. It is now just as quiet as my .30 Cal Wildcat. Thank you Haj.
egad663 (verified owner) –
This baffle pack for the hatsun is exactly if not more than as advertised. It made my bullboss very, very backyard family. And for the cost it was a super value. (you also get 2 neet-o stickers)