Which of the following acronyms is used for immediate action with the M4 rifle?

The acronym used for immediate action with the M4 rifle is SPORT, which stands for Slap, Pull, Observe, Release, and Tap. This procedure is specifically designed to address a malfunction with the weapon, particularly a failure to eject a cartridge or a failure to feed.

Understanding this acronym is crucial for Cavalry Scouts and other soldiers who rely on the M4 rifle, as it provides a systematic approach to troubleshoot common malfunctions that may occur in combat or training situations. In a high-stress environment, being able to rapidly remember and execute this immediate action can be the difference between maintaining operational effectiveness and being unable to fire the weapon when needed.

While POPS and TRR are related to other maintenance or operational procedures, they are not specifically aimed at immediate action for addressing malfunctions with the M4 rifle. This ensures that SPORT is the most relevant and utilized acronym for immediate action, highlighting the importance of being familiar with the correct procedures for maintaining weapon readiness. It's essential for soldiers to know and practice these steps to ensure quick resolution of any issues that could arise during the use of their weapon.