https://www.gamespot.com/articles/last-chance-to-play-fortnite-battle-royales-sniper/1100-6456504/

The latest limited-time event for Fortnite's Battle Royale mode is still going on, but it won't be around for much longer. The Sniper Shootout event concludes on February 2, making this your last opportunity to take part in it before the event rotates out of Epic's popular shooter.

As you can gather from its name, Sniper Shootout revolves entirely around sniper rifles. During this event, all weapons on the map are replaced by sniper rifles, although you'll also be able to find and pick up revolvers to make close-range standoffs more manageable. Consumable items spawn as they normally would during Sniper Shootout, but grenades have been removed, forcing you to rely on the aforementioned weapons (and melee attacks) to dispatch opponents.