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prototask
July 17, 2025
I'm absolutely thrilled with my new GX-E-CS4 pcp air compressor. As an avid air gunner, I was in the market for a reliable, high-performance pump that could handle my needs, and this one has exceeded my expectations.One of the standout features for me is the ability to pump up to 400 bar. I own a Huben GK1 air pistol that is rated for up to 350 bar, so having that extra headroom is fantastic. I can now fill my pistol to its max capacity without any issues. The compressor handles the task with ease, and I'm impressed by how quickly it can fill even my larger air cylinders.Another feature I really love is the water cooling system. I've had troubles in the past with other pumps overheating when filling larger volumes, but the GX-E-CS4 stays cool and composed even when I'm filling my 6 liter bottle. It's so convenient to be able to top up my air reserves without having to worry about the pump conking out.The price of this compressor is also amazing considering all the functionality and performance it offers. I was a bit hesitant at first, but after using it extensively, I can say with confidence that it's worth every penny.Finally, I have to mention the stellar customer service I received. I had a minor issue pop up, and the company was quick to diagnose the problem and send me a replacement part. Their responsiveness and willingness to stand behind their product is refreshing.Overall, I highly recommend the GX-E-CS4 to any PCP air gun enthusiast. It's a game-changer!
Customer
May 29, 2025
I waited to leave this review , I filled my pcp from 3k to over 4kpsi in 4 min. It's got the speed .quality built. Solid.,easey to bring where I need it run till I fell done .I bought a larger filter it slowed it down by a min or so .it's very quiet no worry it shuts off is good a little soon.air bleed the air from running it without the filter and it does have good air filtration. I'd find a good coolant that works with all metals ph neutral that's 7 or 8 dw is 7 .I'll leave another review later .wish I bought this first honestly especially if u pump to 4500psi and shoot alot
cb
May 24, 2025
Used this compressor a couple of times to fill my PCP and, wow. Great quality, worked right out of the box, no leaks, no problems. Haven’t used long term yet, but so far so good.Some stuff no one has mentioned/ details:1) The instructions are pretty good, and state that the air coming out of it is dry and suitable for breathing purposes. I wouldn’t, but that is what it says. It gives detailed instructions for first time and then repeat startup procedures, and is written in readable English. It also has a full exploded parts diagram and parts list.2) I went with a no-compromises set up, with an additional oil-water separator and an additional in-line drier and they *don’t seem to be necessary*. The compressor has a built in oil-water separator that works quite well! After filling, the bleed on my extra external oil-water separator was bone dry, and the bleed on the compressor itself spat out water as expected. I cautiously say you don’t really need an additional moisture solution if you live in dry or semi-dry climate.3) The air hose it comes with are standard air rifle Foster type quick-connects on both ends4) It wasn’t clear but the water cooling is actually a small very good functioning radiator and water pump. I was worried it might have just been a water jacket for the thermal mass, but that is not the case. The instructions say over and over to fill the water first before turning it on. Mine actually came with the water reservoir about half full of water already, so even if you were dumb and didn’t fill it, it probably wouldn’t have ruined the water pump outright.5) The AC-DC converter appears to be of good quality and works well so far.6) Comes with a quick-connect plug for the air line, and instructions that with the plug in place you should get 250 bar in 38 seconds or so. I confirmed this.7) Took about 10 minutes to fill my ~600 mL bottle from 100 to 250 bar, including the extra volume of the external oil-water separator and big drier. It would probably be a lot faster without the extra volume, as stated above in point #2. Since I have them, though, I will continue to use them.8) The automatic shut off with double-redundancy is, in my opinion, a critical safety feature. I couldn’t imagine filling a potentially dangerous high-pressure air device without one.9) Manual states it can be used vertically or horizontally, in case that matters to you.
James Stadler
May 2, 2025
Easy to use, very quiet unit, long enough run time for filling larger bottles. Works great for quick refill's, would like to see a more durable AC/DC power supply as the supplied one works, but no place to store it with compressor for travel, and power supply is not as rugged as the compressor is. Shipping was quick, packing was very good (lots of foam and support material) unit came undamaged and sealed nice.Would like to see hour meter (adding a vibration activated hour meter, but if you travel with it, it will activate during travel in a vehicle) and a temp gauge would be nice too.Shut off works great, seems to be a nice reliable compressor as what I read from other reviews.Would definitely recommend this model to a friend.
DAfanatic
March 28, 2025
I'm always nervous when purchasing anything from China but I figured it was worth a try after reading the reviews. I have only had it a few days but so far I have topped off my aea carbine pcp rifle from 2000psi to 4500 in minutes and it also filled a standard size scuba tank too 3000psi from empty in roughly 4 hours with a 30 minute break when it hit 1500psi. it probably would have been fine to fill it non stop but I would rather be safe then sorry. this compressor is QUIET, I have it setup on a bench behind my chair in the garage and when compared to my rigid 5 gallon compressor it's galaxies apart! Hopefully it continues to work as it should for years to come.would buy again as long as it lasts a few years
Krys
March 21, 2025
Funktion super schnell und tadelos.
Giuseppe
February 20, 2025
IL COMPRESSORE È ARRIVATO CON ALCUNE PARTI ARRUGGINITE,STAVA DENTRO UN SACCHETTO DI PLASTICA DOVE C'ERA PRESENTE UN PO' D'acqua. L'esterno della confezione completamente asciutta.
berny
February 10, 2025
Excellent et puissant . Gonfle avec filtration bouteille de plongée
Jan Jonker
December 3, 2024
I bought this compressor for for PCP airguns and was pleasantly surprised how quiet this device is relative to another (regular) compressor I have. Combined with the max pressure and ability to fill both weapons and (small) bottles makes this a good buy for me.
jailan
November 25, 2024
He probado a llenar una botella de 5L a 300bar en la primera prueba y ha ido bien. En menos de 3 horas lo ha resuelto bien (2:30). Necesité ponerle unos 300 ml de refrigerante (agua destilada) antes de empezar y usé un filtro de agua/aceite entre el compresor y la botella. No es muy ruidoso y no se calienta mucho. Buena compra.
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