GX-E-CS4 Best Overall
- Power
- 12V DC / 110V AC
- Weight
- 29 lb
- Tank Volume
- 6.8 liters
- Max Pressure
- 400 bar / 5,800 psi
A 6.8-liter tank and a five-hour duty cycle are the two numbers that explain the GX-E-CS4. This is not a compressor you tuck in a backpack; it is a bench unit built to sit next to a large carbon-fiber bottle and work through fills that heat a smaller pump. The water tank and grease tank sit on top, and the four-stage, 350W motor is rated to 5,800 psi.
That combination is why it is our top pick for anyone filling more than a rifle reservoir. The water-and-fan cooling is the difference between a compressor that can finish a 6.8L bottle and one that has to stop and cool. The built-in hour meter is a small thing we appreciate, because it gives you a way to track maintenance instead of guessing. Auto-stop and dual 12V/110V power round out the package.
We also like the 5,800 psi ceiling for 4,500 psi work: it leaves headroom, and the four-stage design is meant to run cooler than simpler single-stage units. The trade-off is weight. At 29 pounds, it stays on a bench or in the truck bed; you will not carry it to a blind. That is fine for its job, but it is not the compressor for a shooter who fills one rifle from the tailgate.
For a large-tank shooter, the CS4 is the one that makes the least sense to compromise on. It costs more than the portable picks, and it takes up more space, but it is the only one here with the cooling and run time for a 6.8L bottle. If your fills are rifle-sized, the CS2 is easier to live with. If you regularly empty a big bottle, the weight is the price of the duty cycle.
What We Like
- 6.8L tank capacity for big bottles
- Five-hour continuous run rating
- Water and fan cooling
- Dual 12V/110V power
Worth Noting
- 29 lb is bench-first
- Requires water/grease tank setup
We recommend the GX-E-CS4 for anyone filling a 6.8L tank or running long sessions; its water-and-fan cooling and five-hour duty cycle are worth the extra weight.
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