During which cycle of operations does extracting begin in the M249 AR?

Extracting begins during the unlocking cycle of operations in the M249 AR. This stage occurs after the firing pin has struck the primer and the cartridge has been discharged. The bolt first moves slightly rearward to unlock itself from the barrel extension, which allows for the extraction process to begin. At this point, the extractor claw grips the rim of the cartridge case and pulls it from the chamber as the bolt continues its rearward motion.

This timing is crucial for ensuring that the spent casing is removed effectively, allowing the next round to be fed smoothly into the chamber in the subsequent phases of operation. Understanding the sequence of operations in firearms is essential for proper maintenance and operation, ensuring efficiency in cycling and reloading during firing exercises or in a combat scenario.