Whistling bird

A whistling bird was a type of weapon used by Mandalorians. They were small cylinder-like devices placed in wrist armor which, when deployed, flew threw the air making a whistling noise before striking the target and killing them with a small explosion. In 9 ABY, a Mandalorian armorer made whistling birds for a bounty hunter known simply as The Mandalorian. He subsequently used whistling birds to kill four Remnant Stormtroopers simultatenously during a mission to rescue "The Child" on an unidentified world.