Adummy round ordrill round is a round that is completely inert, i.e., contains noprimer,propellant, or explosive charge (filling).[1] It is used to check weapon function, and for crew training.[2] Dummy ammunition is distinct from "practice" ammunition, which may contain smaller than normal amounts of propellant and/or explosive.[3] For example, the M69 practicehand grenade[4] emits a loud pop and a puff of white smoke.
A dummy is not to be confused with ablank, acartridge for afirearm that containspropellant and a primer but nobullet orshot; a dummy does not produce an explosive sound like a blank does.
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