Which item is an example of ammunition not stowed in small arms magazines?

The item that serves as an example of ammunition not stowed in small arms magazines is 20 mm Close-In Weapons System (CWIS) ammunition. This type of ammunition is significantly larger and designed for specialized weapon systems that provide defense against small boats and aircraft, often mounted on naval vessels. Such ammunition requires dedicated storage and handling procedures distinct from those used for conventional small arms.

Small arms magazines are typically used to store ammunition like 9 mm ammunition, rifle cartridges, and hand grenades, which are all classified as small arms or individual weapons munitions. Each of these types of ammunition is specifically designed for use in handheld or crew-served weapons, differentiating them from the larger caliber and specialized nature of 20 mm CWIS ammunition. This highlights the importance of proper storage protocols aligned with the size and type of ammunition to ensure safety and operational readiness on board aircraft carriers.