Which form is specifically used for reporting potentially dangerous ammunition defects?

The correct choice for reporting potentially dangerous ammunition defects is DA Form 4379. This form is specifically designed to document and report any hazardous or potentially dangerous conditions associated with ammunition. Its use helps ensure that such defects are communicated properly within the military supply chain, facilitating timely inspection, evaluation, and corrective actions to maintain safety and operational integrity.

Other forms mentioned serve different purposes; for instance, DA Form 2028 is utilized for suggesting improvements to a publication or report, DA Form 2404 is used for equipment inspection and maintenance, and DA Form 3099 is related to motor vehicle or equipment transactions. Understanding the specific role of each form is essential for maintaining safety protocols and ensuring accurate documentation within military operations.