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:
- 2 – #5 Shims.
- 1 – #3 Shim.
- 2 – #2 Shims.
(Two #2’s = One #4 | Two #5’s = One #10 | One #5 + One #3 = One #8, and so on)
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.
skyking964 (verified owner) –
I have the Ronin which I use on my Airacuda Max in 25 caliber and 22 caliber. Hajimoto recommended that I get the product that is designated “25/30“, and I did so. I shoot every day in my backyard, so I needed something, that would moderate the report in consideration of my neighbors. Hajimoto‘s customer service is superb. I have also use the Ronin on my 22 and 25 caliber Stoeger, XM,1 Bullshark with excellent results.
alarmclok –
Had been looking at these for months. Should I shouldn’t I, would I wouldn’t I? Finally did. Love it. I’m using medium height scope rings on the Gauntlet SL2 .30 cal and I can just see the top of the moderator in my sight picture. Doesn’t seem to affect anything. I’m trying to think if moving the scope closer to my eye or further away would make it less visible. Not that I’m gonna bother.
It’s quiet. The pellet hitting the tree stump louder than the blast. And it looks awesome. I never thought I’d be one of those people decorating a gun but here I am. I blame video games. I’m pretty sure I’ll be getting the Ronin Extender soon. Why? I have no idea. See how much quieter it can get I guess. And to make it longer because my gauntlet isn’t long enough. If 6 inches makes it look cooler 12 inches will be twice as cool. It’s just math really and you can argue with math but you’ll never win.
Hajimoto –
We are happy to hear that the Ronin is working well for you. If you have not considered it yet please think about the amount of weight that you are added to the end of your barrel and how easily the barrel is influenced. If you have not added one of our barrel supports yet, you should so that your point of impact is less likely to shift with any contact to the barrel. Just select the Gauntlet Model, Caliber, Tank Size, and The Pic Rail variant, and you are done. https://hajimotoproductions.com/product/hp-barrel-band/