https://www.polygon.com/2019/2/20/18233500/apex-legends-new-gun-havoc

Apex Legends has its first new gun: Havoc. The rifle uses energy ammo and includes a few interactions with the game’s pre-existing mods.

Developer Respawn Entertainment first teased the weapon Tuesday in a video that gave us a brief glimpse of how it might work. Now that we can see the whole thing in action, it appears that the rifle has a brief spin-up time to reach its top rate of fire. It’s similar to the energy light machine gun, Devotion.