In many countries, anyone under the age of 18 cannot play airsoft because it is illegal. However, 10 years is a perfectly legal age for the sport in the United States of America. There are some age restrictions in some states on permission to get and carry an airsoft gun. For example, airsoft guns are considered firearms in California that can only be used by people above the age of 18. Under some circumstances, minors can use airsoft guns under the strict supervision of adults and are completely banned from purchasing airsoft guns.