Which step is first in clearing a bolt override malfunction?

In addressing a bolt override malfunction, the most critical first step is to move the selector lever to the "safe" position. This action ensures that the firearm cannot inadvertently discharge while performing further troubleshooting or clearing steps. Safety is always the foremost consideration when handling firearms, particularly in a malfunction situation where the operator may be handling the firearm in ways that could lead to an accidental discharge.

By placing the rifle on "safe," the user establishes a controlled environment to assess and clear the malfunction. Subsequently, other steps can be performed with reduced risk.

The other options, while important in different contexts, do not prioritize safety in the immediate first action of addressing the malfunction. Clearing the receiver of loose rounds, shaking the rifle, or cycling the action are all actions that should be taken after ensuring that the firearm is in a safe condition. This sequence of operations is essential for maintaining proper firearm handling protocols.