In what sequence do the operations of the M16A2 rifle occur during firing?

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The correct sequence of operations during the firing of the M16A2 rifle is option B: firing, unlocking, extracting, ejecting, and cocking. This sequence illustrates the mechanical process that occurs within the rifle after the trigger is pulled.

When the trigger is pressed, the firing pin strikes the primer of the cartridge, initiating the firing process. Immediately after firing, the bolt unlocks to release the spent cartridge. As the bolt moves rearward, it engages in the extraction of the spent casing from the chamber. The extractor, which is attached to the bolt, pulls the spent cartridge out as it travels back.

Once the spent casing is extracted, the bolt continues moving rearward, allowing the ejector to push the casing out of the ejection port, effectively ejecting the spent round from the rifle. After the bolt has cycled fully, it will return forward. During this action, the bolt will cock the hammer, preparing the weapon for the next shot.

Understanding this sequence is essential for recognizing how the M16A2 rifle operates and ensures proper maintenance and handling during firing. Each step builds upon the previous one, highlighting the importance of each mechanical part during the firing process.

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