Halo Airsoft guns are replicas of some of the weapons used by virtual soldiers in "Halo," the popular science fiction first-person-shooter video game developed and managed by 343 Industries, which is a subsidiary of Microsoft. The guns are used in Airsoft, a sport similar to paintball in which victory is achieved by shooting opponents with nonlethal spherical pellets.
Because they are not mass produced, no two Halo Airsoft guns are exactly alike. This also makes them relatively expensive. Despite a potentially large market, manufacturers have yet to release official Halo Airsoft weapons as of 2014. This is likely because of the hefty licensing fees that the developers of "Halo" would demand. The result is a market dominated by individuals and small independent shops that often use air rifles as the basis of their modifications.
Generally, players prefer weapons that project aggressiveness. Robust construction, two-tone colors and built-in LED ammunition counters are also in high demand. Because Halo Airsoft demands the use of potentially lethal weapons, younger children are not allowed to participate, and older children must be accompanied by adults throughout a game. In some countries, such as the United Kingdom, adults may be required to have additional certification before they are allowed to play.