Which of the following is not classified as a phase one stoppage?

The correct choice pertains to the categorization of stoppages that can occur in firearms during operation. A phase one stoppage typically refers to issues involving the function of the ammunition and the firearm that can be resolved with immediate action techniques, such as a tap-rack-bang method.

"Failure to fire," "failure to feed," and "failure to eject" all represent common malfunctions that fall under phase one stoppages. These issues generally occur in the cycle of fire; they can often be resolved quickly and do not require disassembly of the weapon or extensive troubleshooting. For instance:

• A failure to fire may involve a misfire due to a faulty primer or poor ignition, promptly addressed by inspecting and trying to fire again.

• A failure to feed occurs when the round does not enter the chamber properly, which may be corrected with manipulation of the magazine or slide.

• A failure to eject refers to a case where the spent cartridge does not exit the chamber, requiring jostling of the weapon to clear it.

Conversely, a failure to extract is not classified as a phase one stoppage but rather as a phase two stoppage. This type of malfunction requires more detailed troubleshooting and potentially the disassembly of the firearm because it implies that the