This video provides an in-depth explanation of the long recoil operating system in firearms. It details how the barrel moves rearward with the bolt, remains locked until the full travel is achieved, and then unlocks to allow the bolt to stay rearward while the barrel returns forward. The description highlights the system's safety benefits due to the extended time for pressure venting, but also notes its mechanical complexity and higher felt recoil. Examples of firearms utilizing this system are given, including the Chauchat LMG, Remington Model 8/81 rifle, Browning Auto-5 and Winchester Model 1911 shotguns, and the Former Stop handgun, all dating from the early 20th century.
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