PCP stands for pre-charged pneumatic. Instead of a spring or CO2, a PCP rifle stores high-pressure air in a tank or tube that you fill before shooting.
PCPs are the most accurate and powerful type of air rifle, which is why serious hunters and target shooters use them. Here is how they work and what you need to know before buying one.
How a PCP Works
You fill the rifle’s air reservoir from an external source. When you pull the trigger, a hammer knocks open a valve and releases a burst of air behind the pellet. Because there is no spring slamming forward, there is no recoil, which helps accuracy.
How to Fill a PCP
- Hand pump: cheapest, but filling to high pressure takes real effort.
- Scuba or carbon fiber tank: fast fills. Tanks need refills at a dive shop or with a compressor, and periodic inspection.
- Compressor: most convenient. Use a moisture filter, because water in the air can damage the rifle.
Always follow the rifle’s maximum fill pressure.
Regulated vs Unregulated
An unregulated PCP’s velocity changes as the pressure drops, so there is a sweet spot in the shot string. A regulated PCP keeps pressure to the valve steady, giving more consistent shots.
PCP Pros and Cons
Pros: excellent accuracy, no recoil, high power, easy multi-shot magazines, quiet versions available.
Cons: higher cost, need fill equipment, and more maintenance on seals.
Related Guides
- The 4 Best Air Rifles for Squirrel Hunting (2026)
- The 4 Best .22 Pellets for Accuracy (2026)
- The 5 Best .177 Pellets for Accuracy (2026)
Frequently Asked Questions
How many shots does a PCP get per fill?
It varies a lot by rifle and power level, from around 20 to over 100.
Is a PCP better than a spring air rifle?
PCPs are usually more accurate and easier to shoot well, but springers are cheaper and self-contained.
Can I fill a PCP with a bike pump?
No. You need a high-pressure airgun pump, tank or compressor.
New to air guns? Start with our Air Guns for Beginners guide →