Airgun

An airgun is a firearm or imitator that uses compressed air or another gas to propel a projectile. Unlike powder firearms, airguns rely on stored gas pressure to generate the impulse that moves the pellet or BB. They are used for target shooting, plinking, pest control in some jurisdictions, and sport hunting in others. Airguns come in rifles and pistols, and range from low-powered recreational models to higher-powered rifles designed for training or hunting.

Most airguns operate with one of several power sources. Spring-piston and gas-spring designs use an internal piston to compress air when the trigger is pulled, launching the projectile. CO2-powered guns use cartridges or cylinders to provide gas pressure. Pre-charged pneumatic (PCP) guns store high-pressure air in a reservoir and require an external fill source such as a hand pump, scuba tank, or compressor. Some break-barrel, underlever, or side-lever mechanisms are common in spring-piston configurations, while PCP and CO2 systems tend to use different valve and firing mechanisms. Pellets or BBs are the typical projectiles; pellets are usually in calibers such as .177 and .22, while BBs are small steel spheres used in some lighter guns.

Ammunition and performance vary widely. Caliber choices, pellet design, and barrel quality influence accuracy and power. Legal status and safety requirements differ by country and region and may include licensing, age restrictions, and limits on muzzle energy or projectile type. All airguns require proper handling, eye protection, and secure storage.