To disable a weapon, which primary component should be removed?

• A. Gas piston
• B. Bolt carrier group
• C. Receiver
• D. Charging handle

Answer: (B)

The bolt carrier group is the part that drives the firing cycle. It carries the bolt, locks and unlocks the bolt, extracts the spent casing, and chambers a new round as the weapon cycles. Remove this assembly, and there’s no moving part to perform the chambering, locking, and extraction steps, so the gun cannot operate at all. Other components like the gas piston affect how the action cycles, but the absence of the bolt carrier group guarantees the weapon is inoperable because the core mechanism that makes the cycle happen is gone. While removing the receiver or charging handle would also render the firearm unusable in practice, the bolt carrier group is the primary component whose removal stops the firing sequence itself.