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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Gauntlet 1 and Gauntlet 2
Hajimoto Productions Tuning O-ring kit for the Gauntlet and Gauntlet 2
Now includes my “NO RING” pellet probe seals as HP-1 rather than the typical high wear donut orings.
I have put together the most common o-rings that fail during a tuning session. Most of the stock o-rings for the internals will gouge when the airgun is disassembled, this kit will allow you multiple attempts should any of the o-rings fail. Please note that the .30 caliber uses completely different internal o-rings than all previous Gauntlet Models including the .30 cal exclusive transfer port orings Which will be bagged as TP.
Some of the NO-Ring seals have the leading edge precision ground.
These tapered / precision ground types need to be installed as shown below
(Images are of the .30 caliber NO RING)
You get:
Hajimoto Productions Regulator Shim Kit For Umarex Gauntlet
I have put together a very easy and complete stainless steel shim kit so you can adjust your Gauntlets Regulator output. The shims that I have included give you a wide range of adjustability to mix and match different thicknesses to get the regulator to output exactly what you want. The shim kit comes with easy to follow instructions which guide you through the process as to what shims you need to add to typically achieve my recommendations for each Gauntlet Caliber.
The shim kit contains:
To take a stock G1 .177/.22 from the stock 1100-1050PSI to my recommended 1350-1400PSI you would add two (2) #5 shims (10).
To take a stock G1 .25 from the stock 1900-1950PSI to my recommended 2100-2200PSI you would add one (1) #3 shim (3).
The included two #2 shims are for minor adjustments if you have a finicky regulator.
DETAILED LESSON/EXAMPLE:
Let’s say your .22 Gauntlets regulator only puts out 1300PSI after installing the two #5’s when it should be 1350 to 1400PSI, you would add one #2 for a total of 12 to help get it there. If after the addition of the one #2, you’re still 50psi short so you would pull out the #2 and use the #3 for a total of 13.
Always use a regulator output tester to confirm the output pressure of your regulator. It is the only safe and sure way to properly adjust the pressure of your regulator.
You have to fill and purge so the Belleville washers settle into the new preload. Be sure to slow fill your bottle the first time only to 500PSI and then purge it, fill slowly a second time to 1000, and then purge fill the final time slowly and watch to be sure the reg has settled and does not exceed your target pressure. If it does exceed your target pressure, stop filling, purge and shim less.
If you rapid fill, there is a good chance you will pop your burst disc.
THIS IS AN AIRGUN ONLY PART
This part is designed and manufactured by DonnyFL
Remember it is recommended that you order your suppressor one size larger for shrouded barrel PCP’s.
If you have a .22 caliber shrouded barrel PCP, you’ll want to order a .25 caliber suppressor.
The .177/.22 is for shrouded barrel .177 or direct barrel threaded PCP’s in .22.
The .22/.25 is for shrouded barrel .22 or direct barrel threaded PCP’s in .25.
The .25/.30 is for shrouded barrel .25 or direct barrel threaded PCP’s in .30. The exception to this rule is the Gauntlet .30 which is shrouded but because of the unique end cap, marries the barrel and shroud at the end.
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)