Beam weapons are weapons that require a period of charging, done by holding ⚷ Open / Activate, before firing. While charging, the user's Ki will be drained and their speed will be reduced to their Ki charging speed while the weapon builds one Charge per second, up to its listed Maximum Charges plus any extra charges granted by Armor and Accessories. Releasing ⚷ Open / Activate will gradually discharge the weapon until it runs out of Charges.
Once enough Charges are stored, pressing ⚒ Use / Attack will fire the beam. Releasing the key will "drop" the beam, where it will remain stationary and deal damage until it dissipates after a few seconds, while holding the key will keep the beam "held" and firing. A "held" beam will consume one Charge per second in place of the user's Ki to fire. Once it runs out of Charges, it will consume Ki at a rapidly increasing rate to continue firing. Letting go of ⚒ Use / Attack at this point will instantly dispel the beam.
Beam weapons' projectile speed cannot be altered via Modifiers, but they can still receive them.