Light Duty GX Pump
GX Pump CS1-I
4,500 PSI max · Fan-cooled
12V120V220V Auto-stop
Compact fan-cooled 4500 PSI unit with a built-in power adapter. Runs on 12V, 110V or 220V. Made for filling airguns directly.
Compressors / Brands
GX Pump Compressors
GX Pump makes a wide range of portable electric PCP compressors, from the compact CS1-I up to the dual-piston 5K2. Their water-cooled CS4 series is the sweet spot for most shooters.
10 compressors
Narrow it down further → Light Duty 
Light Duty GX Pump
GX Pump CS2
4,500 PSI max · Fan-cooled
12V120V Manual stop
12V fan-cooled 4500 PSI compressor with a 110V converter in the box. Manual shutoff: no auto-stop.
Light Duty GX Pump
GX Pump CS3
4,500 PSI max · Fan-cooled
12V120V Auto-stop
12V fan-cooled 4500 PSI compressor with auto-stop and a built-in oil/water separator. 110V converter included.
Light Duty GX Pump
GX Pump CS3-I
4,500 PSI max · Fan-cooled
12V120V Auto-stop
The CS3 with the 110V converter built in. 4500 PSI, auto-stop, built-in oil/water separator.
Light Duty GX Pump
GX Pump L2
4,500 PSI max · Fan-cooled
Battery Manual stop
Cordless 18V battery compressor, 4500 PSI. About 30 to 35 minutes per charge. Manual shutoff: no auto-stop.
Light Duty GX Pump
GX Pump L3
4,500 PSI max · Fan-cooled
Battery Auto-stop
Cordless. Runs on two 18V lithium batteries, about an hour of pumping. 4500 PSI with auto-stop. Sold direct by GX.
Medium Duty GX Pump
GX Pump CS4
5,800 PSI max · Water + fan cooled
12V120V Auto-stop
Water-cooled, 4-stage, 350W, 5800 PSI. Auto-stop, hour meter, rated for 5 hours continuous. 12V with a 110V converter included.
Medium Duty GX Pump
GX Pump CS4-I
5,800 PSI max · Water + fan cooled
12V120V Auto-stop
The CS4 with the 110V converter built in. Water-cooled, 4-stage, 350W, 5800 PSI, auto-stop, 5 hours continuous. Roger's champion pick.
Medium Duty GX Pump
GX Pump 5K1
5,800 PSI max · Water + fan cooled
120V Auto-stop
The single-piston 5K2. 4-stage, 900W, 5800 PSI, auto-stop, 10 hours continuous. Sold direct by GX.
Medium Duty GX Pump
GX Pump 5K2
5,800 PSI max · Water + fan cooled
120V Auto-stop
Dual-piston, 4-stage, 1200W, 5800 PSI. Fills a 6.8L tank in about 45 minutes. Rated for 10 hours continuous. Sold direct by GX.