Answer several questions to demonstrate knowledge of key principles related to troubleshooting.

1. What is the first thing you must know before attempting to disassemble or inspect a firearm? The first thing I would want to know before attempting to disassemble or inspect a firearm is how to clear it of ammunition. Some firearms like Glocks require the user pull the trigger to remove the slide and being sure the firearm is not loaded is the first and most critical step. 2. In a straight blowback system, when does the bolt/slide begin reacting to the pressure created by the ignited cartridge and what does this teach us about the importance of timing? When the primer is struck there is not enough pressure to cycle the slide or bolt for normal operation. Burning gunpowder and building pressures push both forward and backward, pushing the bullet out of the muzzle and pushing the casing out of the bore starting its extraction and ejection process. The exact moment the bolt or slide reacts to this pressure is when the bullet exits the muzzle. Timing is important because if the pressure is too much as the casing is being extracted then the casing wall may expand or crack causing malfunctions.

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