The narrow wooden tube houses thin needles with deadly points. The slender shaft is engraved with small designs and flared at one end, sporting a small rim at the base.
You can use a weapon that has the Ammunition property to make a Weapon Ranged Attack Roll only if you have Ammunition to fire from the weapon. Each time you Attack with the weapon, you expend one piece of Ammunition. Drawing the Ammunition from a Quiver, case, or other container is part of the Attack (you need a free hand to load a one-handed weapon).