Available PCP filling options include manual hand pumps or electric compressors. Another option is a carbon fiber or SCUBA tank. This option requires filling from a local SCUBA shop or firehouse.
Common garage and tool compressors and bicycle handpumps are not capable of filling up a PCP air rifle.
Hand pumps are cost-effective, portable, and easy to use, but they require significant manual labor to fully pump up a PCP air gun tank. Electric compressors are efficient and reliable but are more expensive than a handpump.
These videos by Tom Gaylord are a helpful resource if you are new to PCP Airguns.
Airgun Academy Episode 38 - PCP Filling Systems
Airgun Academy Episode 37 - Fill PCP airguns from a tank
Airgun Academy Episode 10 - Intro to high-pressure hand pumps