The Light Machine Gun is the first weapon to be unvaulted for 24 hours for the 14
Days of Summer Fortnite Event.
When Epic had announced the 14 Days of Summer Event which would be taking place in Fortnite, they had mentioned that a new weapon would be unvaulted for 24 hours every day. The first day of the 14 Days of Fortnite Event has just started and the first weapon to be unvaulted for 24 hours is the Light Machine Gun.
The Light Machine Gun was first added in Season 3, in the v.3.5.2 patch and was added in Rare and Epic rarities. It was later vaulted in the v6.00 Fortnite update, but was added to the Playground mode. It was eventually removed from the Playground mode and was added to Creative mode.
This weapon will only be available for 24 hours at which point a new weapon/item will replace it for 24 hours.