This video by Forgotten Weapons explains the concept of "headspace" in firearms, detailing what it is, why it's important, and the potential consequences of incorrect headspace. It covers how headspace allows for manufacturing tolerances in both firearms and ammunition, but too much or too little can lead to extraction issues, poor accuracy, case head separations, and even catastrophic failures ("kabooms"). The video also references other specific firearms like a Krinkov and a Turkish "Enfauser", and features a prototype rifle that operates based on headspace. It's aimed at educating firearm enthusiasts about a fundamental aspect of gun mechanics.
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