Which type of turn-in is applicable for dummy rounds used for testing gun systems?

The correct answer is based on understanding the purpose and classification of dummy rounds in the context of military training and operational protocols. A Custody Turn-In (TIN) refers to the process by which items, such as dummy rounds, that are not intended for direct use in combat or live fire but are instead utilized for testing, demonstration, or training purposes are accounted for and returned to the proper agency or storage for oversight.

Dummy rounds serve a specific function in that they allow personnel to practice handling and operation of weapon systems without the risk associated with live ammunition. When it comes to maintaining inventory and ensuring proper tracking of these items, a Custody TIN is critical, as it ensures that these non-live munitions are accounted for and not mistakenly mixed with operational rounds.

In contrast, other options do not accurately capture the context of dummy rounds. Turn-in for disposal would apply to munitions that are no longer usable and need to be safely discarded, while excess munitions turn-in does not apply specifically to training items. Training munitions return could suggest a broader category, but typically it pertains to live training rounds rather than the dummy rounds specifically used for testing gun systems. Hence, the use of a Custody TIN for the return of