The Crossbow is a weapon used mainly by the Stone Army (primarily by the Stone Scouts). It can shoot arrows, similar to a Ninja Bow. The weapon was also wielded by Zane.
History
Legacy of the Green Ninja
Rise of the Spinjitzu Master
This weapon was used by Stone Scouts.
Master of the Mountain
Grief-Bringer
When the Geckles met with the Munce to call for a truce, some of the Geckles held crossbows. Zane was later given a crossbow and used it throughout the Battle for Shintaro Mountain.
LEGO Ninjago: Tournament (non-canon)
This weapon is used by Skylor (in her range attack) and Shade (in his range attack too).
