Spring air rifles are a type of air rifle that uses a spring-loaded piston to compress air in order to fire a projectile. The spring is released, propelling the piston forward, and the compressed air is forced through a nozzle, which propels the projectile out of the barrel. Spring air rifles are typically used for target shooting and plinking, but can also be used for small game hunting. Because they do not require any external source of power, spring air rifles are very quiet and can be used in areas where firearms are prohibited. However, spring air rifles can be difficult to cock and may require more maintenance than other types of air rifles.