Airsoft is a military simulation sport somewhat similar in nature to paintball, in which players participate in mock combat with authentic military-style weapons and tactics. Unlike paintball, which uses paint-balls as projectiles, Airsoft guns usually use 6 mm spherical projectile (pellet) made typically with injection-molded ABS plastic. The 'weapons' used in Airsoft are generally exact full size replicas of military weapons such as the Colt M16, H&K MP5. Our Airsoft Products have a 30 day manufacturers warranty. Everything you need is in the box. All guns are tested before we ship them.