A pellet gun is a type of air gun that fires small, spherical projectiles called pellets. These guns use compressed air or gas to propel the pellets, making them popular for target shooting, small game hunting, and recreational use. Pellet guns come in various calibers, with .177 and .22 being the most common sizes. Pellet guns can be classified into two main types: spring-piston and pre-charged pneumatic (PCP). Spring-piston guns use a coiled spring to compress air, while PCP guns rely on a pre-filled air tank. Both types are designed to be safe and are often used for training and practice before moving on to firearms.