The Imperial Chest is a Container in Fortnite Chapter 3 Season 3 that players can search to receive a variety of loot, such as the E-11 Blaster Rifle, a Mythic Assault Weapon from the game's crossover with Star Wars.
This Mythic gun functions similarly to the First Order Blaster Rifle but features a faster cooldown time and a more rapid rate of fire.
The Minigun in Fortnite Chapter 3 would be a good comparison for the E-11 Blaster Rifle's cooldown period. As a weapon that uses Energy Ammo, this Blaster Rifle has infinite ammo, making it a solid choice for sustain in combat.
Imperial Chests are characterized by a rectangular shape made up of two squares that appears slightly reminiscent of cubes from Portal.
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