How do you identify a pellet rifle?

A pellet rifle has no firing pin. It also can not fire a bullet or gunpowder. It can not be made to do so either. The pellet has no charge (casing like a bullet) it just a pellet.

However pellet rifles can be just as deadly as a real firearm. They use Air or C02 to project the pellet downrange. Some Pellet rifles are used for hunting, others for target practice.

The Major difference between a firearm and an air rifle, is Gunpowder is use in Firearms and Air or C02 is used in Air rifles.