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How Does it Work: Gas-Delayed Blowback

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Gas-delayed blowback is a relatively uncommon operating system used in handguns. It is not an efficient mechanism for high-pressure rifle power cartridges, but works well with something like 9mm Parabellum. It tends to provide benefits of light felt recoil and better-than-average accuracy, in exchange for overheating much more quickly than other systems.

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