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<p>mechanical sequence:<br/>
* Sealing: The projectile is firmly seated in the muzzle, creating an airtight seal.<br/>
* Compression: The user rapidly advances the plunger. This reduces the volume of the air trapped between the plunger head and the plug.<br/>
* Threshold: As the volume decreases, the internal pressure rises. <br/>
* Ejection: Once the force exceeds the <a href="page.php?w=static_friction">static friction</a> holding the plug in the barrel, the plug is launched. The rapid expansion of air and the subsequent vibration of the barrel</p><p>
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