Airsoft guns are considered replicas of real firearms but not all replicas are Airsoft guns. There are some replicas that don’t have a firing mechanism while others, such as the Real Action Markers, may have a different mechanism and shoot non-Airsoft types of projectiles. This fact alone makes airsoft guns a great collector’s item. Airsoft guns are classified according to their operating principle which can be either: spring, electric, or gas-powered. Airsoft is a combat game similar to paintball in which participants eliminate opponents by hitting them with 6 mm (or occasionally 8 mm) plastic BBs launched from airsoft guns. An airsoft player is shooting from behind cover wearing goggles that fully seal the area around the eyes and a balaclava to protect the face.