What does 'failure to eject' refer to?

'Failure to eject' specifically refers to a malfunction in which the fired cartridge casing is not fully ejected from the firearm after the shooting cycle. This issue can occur due to various reasons, such as insufficient gas pressure in gas-operated systems, dirt or debris in the firearm, wearable parts that need maintenance, or improper ammunition.

When the casing remains in the chamber, it can lead to a problematic scenario where subsequent rounds cannot be loaded, resulting in a jam. Understanding this malfunction is crucial for effective troubleshooting during firearm operation and maintenance, allowing the operator to diagnose issues and ensure the firearm functions properly.

The other response options reflect different types of malfunctions that may occur in a firearm, but they do not encapsulate the definition of 'failure to eject' as precisely as the correct option.