A paintball marker conversion unit includes a projectile staging mechanism
and adapter. The adapter couples the projectile staging mechanism to a
conventional paintball marker with a particular barrel configuration.
Different adapters can be used to couple the projectile staging mechanism
to different conventional paintball markers with different barrel
configurations. Thus, the projectile staging mechanism may coupled with
various paintball markers provided a proper adapter is utilized to match
a particular barrel configuration. The paintball marker conversion unit
allows a conventional paintball marker to fire projectiles other than
paintballs.