Tag Archives: Hatsan

New Hatsan PCP AirGun Fill Probe Parts – O-rings and Caps

I have two Hatsan precharged pneumatic (PCP) airguns – a full size Gladius .22 long and a compact ATP2. I recently needed to replace the O-rings and started researching what was needed.

The O-Rings

Here’s a Hatsan probe and the brownish/tan O-rings are their OEM rings. The black rings are the Buna-N rubber rings that we are now selling.

My two Hatsan’s get pressurized up to 300 bar, which is 4,351 PSI. That’s quite a bit of pressure that the fill probe’s O-rings need to contain plus they need to be flexible enough to allow for insertion and a good seal. One last consideration is the need to withstand the silicone grease that is used to lubricate them (never use oil-based grease on a PCP or it may diesel under pressure).

The O-rings are wear items meaning they will wear out for a variety of reasons and you can tell because when you go to fill the airgun’s tank, you will hear air escaping plus you probably will not be able to get very much pressure to stay in the line. So when mine went out and I installed the spare set that came with the Gladius, I had to think about getting more spares. Hatsan was out of stock at the time so I decided to dig.

So, I started researching what O-rings would work best and sourced some that work great. They are 70A on the shore hardness scale and made from Buna-N rubber which will withstand the silicone grease.

In addition to fitting Hatsan PCP fill probes, they will also fit the Air Venturi Halestorm, Evanix, FX, Hammerli Pneuma, Kral, Lgun and Raider probes.

Click here for the product page on our website to see pricing and place an order.

Keeping the Probe Clean – Caps

While I was at it, I decided to tackle how to keep the probe clean. I’ve had my Hatsans and my Hill Mk4 air pump for a couple of years and have tried to keep bags on the probe to keep it clean. Those semi-rigid airlines flop everywhere and trying to keep dirt off the probe that is sticky with silicone grease is a challenge.

Here’s the uncovered probe begging to have dirt and debris stick to it.

So, after measuring stuff. I came up with two types of caps for people to choose from. The first is a yellow cap with a pull tab.

Here’s the yellow pull tab cap that extends just past the rear O-ring

These are for folks who want to protect their probe but want a bright color that is easier to find. Click here for the product page to read the measurements, see the pricing and order.

The second cap I came up with is a longer black cap that covers the whole probe. It’s basic black but it does protect the whole probe and is what I am personally using now.

This literally is my cap on my Hatsan fill probe. It’s what I now use to keep to clean and it comes on and off real easy!

To learn more about the measure, pricing and to order, please click here.


If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at info@roninsgrips.com.


Hatsan AT-P2 QE: Questions & Answers

As mentioned previously, I purchased a Hatsan AT-P2 QE pistol.  A few guys email med asking questions and I decided to post my answers here for others to read also:

How comfortable is it?  It looks like a kid’s toy.

I’m 5′ 8″ and find it very comfortable shoot.  I wanted a small profile PCP repeating airgun so I bought it wanting to hold it close to show a small profile.  I’m right handed and my left hand naturally goes to the front of handguard.  I think that is why they designed it with that angle.

I have the stock adjusted one click back out of five.  The cheek piece is adjustable but I found it did not need to be changed.  Again, it works fine for me.  I have no interest in trying to use it as a giant pistol.

How tight is the stock?

It wiggles just a tiny bit without a load but once I put it to my shoulder and place my cheek on the rest, it is solid.

Does it have two triggers?

No.  The front thing that looks like a trigger is the safety lever.  It’s actually very slick once you get used to it.  My Gladius has the same safety and trigger set up.  While it may look different, you can very easily turn it on, off or check the status.

The trigger is colored gold and the think safety lever is in front of it.

The trigger itself is Hatsan’s Quattro trigger and is user adjustable.  It has three screws for overall trigger travel, second state engagement and trigger pull weight.  Hatsan USA has a video on how to adjust the trigger – click here.

Does Hatsan make decent air guns?

Yes, they actually make very good airguns.  They are located in Turkey and don’t have the same brand recognition as Daisy, Crosman, Gamo, etc.  I posted factory tour video a while back that I found.

Why did I pick .22 caliber?

Well, I was worried that if I went with .177 that I would not have enough foot pounds of energy (FPE) to cleanly kill the pests I expected – squirrels, ground squirrels, and rabbits.  In talking with guys and reading, I decided to go with .22 for a trade off between power, air use and sound.  The bigger calibers are much louder and use more air.  I’ve found that .22 is plenty for me given I am shooting relatively short distances most of the time. 

Does a hand pump really work or should a person buy a SCUBA tank?

Guys, the last thing I want to do is to buy a tank and deal with going to get it filled.  I have a Hill Mk.4 hand pump and highly recommend it.  I bought it for my Gladius and now use it on the AT-P2 also.  What is nice is that the air cylinder is small on the AT-P2.  I shoot about 8-10 rounds and then top it off back to 200 BAR and that takes about 20-30 pumps.  When I see I am down to 2-3 pellets, I top the magazine off.

This is the Hill MK.4 pump.  The small bottle is Silicone Grease.  I periodically coat the shaft of the pump and the male quick connect plug.  I do it once every couple of months – not much really.

Now if you tell me you plan on shooting a ton, then you might want a tank or one of the new little portable compressors that are available.  I’m using it for pest control so my average number of shots at a time is 1-2 and then I done.  It’s easy for me to top off the magazine and the tank.

In Closing

I appreciated the folks sending in the questions and hope my answers helped them out.

6/29/2020 Update: Still very happy with the AT-P2 – it’s great on pest control with squirrels. We now have replacement fill-probe O-rings and caps to keep your fill probe clean. Click here to learn more.


If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at info@roninsgrips.com.


Hatsan Striker .177 Cal. 1000 FPS Black Air Rifle with 3-9x32mm Scope

$124.99
End Date: Tuesday Jul-28-2020 7:22:45 PDT
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Hatsan QE LDC Muzzle break

$47.00
End Date: Wednesday Jul-8-2020 10:16:11 PDT
Buy It Now for only: $47.00
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Hatsan Mod 130S New .30 Cal Vortex QE Air Rifle w/ 3-9×40 Scope

$319.99
End Date: Sunday Aug-2-2020 9:58:59 PDT
Buy It Now for only: $319.99
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Hatsan Mod 130S New .30 Cal Vortex QE Air Rifle w/ 3-9×40 Scope

$319.99
End Date: Sunday Aug-2-2020 9:58:59 PDT
Buy It Now for only: $319.99
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Hatsan blitz lDc 177-30

$47.00
End Date: Friday Jul-17-2020 18:24:53 PDT
Buy It Now for only: $47.00
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Air Venturi MK4 Kit by Hill Hand Pump, Up to 4500 PSI

$133.00 (26 Bids)
End Date: Monday Jul-6-2020 23:00:47 PDT
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Hill MK4 air rifle PCP hand charging pump(4128-005)

$220.00
End Date: Wednesday Aug-5-2020 13:00:49 PDT
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Hill MK4 PCP HPA Hand Pump O-ring Reseal Piston Kit

$9.60
End Date: Wednesday Aug-5-2020 8:42:55 PDT
Buy It Now for only: $9.60
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HILL Air Pump MK4 O Ring Seal washer service kit + FREE GREASE

$12.46
End Date: Thursday Jul-16-2020 5:00:54 PDT
Buy It Now for only: $12.46
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HILL Air Pump MK4 O Ring Seal washer service kit + FREE GREASE

$12.46
End Date: Thursday Jul-16-2020 5:00:54 PDT
Buy It Now for only: $12.46
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Hatsan AT-P2 QE Reviews and Videos That I found Helpful When Researching My Purchase

In the old days, kids I mean like the 1970s and 80s in my case, you went to the library and read old magazines or asked your friends about what they knew.  These days, we tap into the web and can watch videos and read reviews.  I tell you, it’s pretty amazing what you can find.  So, when I was researching what small precharged pneumatic (PCP) pistol or bullpup to buy for discrete pest control use mostly in 10-15 yards vs. my .22 Hatsan Gladius Long, I hopped on and started digging.

I quickly got my selection narrowed down to the Hatsan AT-P2 QE as I mentioned in a previous post and then bought it.  What I want to share with you are some of the third party review videos that I found very helpful during the selection process.

Here’s the best video on the AT-P2 QE specifically:

The following is a review of the base AT-P2 without the integrate Quiet Energy (QE) moderator:

Third party written reviews:

These are Hatsan’s pages:

I hope these help you out.  I am very please with my pistol so far and would recommend anyone needing a discrete powerful and accurate .22 PCP repeater.


If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at info@roninsgrips.com.


Hatsan ATP2 - QuietEnergy Tact PCP Pistol (.177cal)- Blk Syn

$427.35
End Date: Tuesday Aug-4-2020 14:52:51 PDT
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Hatsan* ATP2 Tactical Pistol PCP (.177cal)

$457.83
End Date: Tuesday Aug-4-2020 15:55:06 PDT
Buy It Now for only: $457.83
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