Zarr

The Zarr is a Grineer heavy weapon introduced in The War Within update. Its Alternate Fire allows users to choose between firing a single, explosive cannonball or a barrage of projectiles.

Trivia

 * The Zarr's name and function seems to be a reference to Tsar Cannon, one of the largest cannons in terms of caliber, though it was never used in direct combat.
 * The Zarr is visually and somewhat functionally reminiscent of a swivel cannon.
 * Upon release, the Codex entry misspelled "cannon" as "canon".