screwgate

A screwgate is a type of gate mechanism commonly used in firearms, particularly in bolt-action rifles and some handguns. It functions as a safety device that prevents the bolt from being opened or closed unintentionally, ensuring the firearm remains secure when not in use. The term "screwgate" originates from the design, which often involves a screw-like or threaded component that locks the bolt in place.

In bolt-action rifles, the screwgate typically consists of a rotating or sliding element that engages with the bolt or receiver when the firearm is closed. This mechanism prevents the bolt from being pulled back unless intentionally released, reducing the risk of accidental discharges or malfunctions. Some screwgates also incorporate additional safety features, such as a manual safety lever or a firing pin block, to further enhance control.

The design of a screwgate varies depending on the firearm model. In certain rifles, such as the Mauser 98 series, the screwgate is integrated into the bolt itself, requiring the user to rotate or screw the bolt to unlock it before opening. Other firearms may feature a separate locking mechanism, such as a sliding or pivoting gate that must be disengaged before the bolt can be cycled.

Screwgates are valued for their reliability and ease of use, particularly in military and hunting applications where safety and functionality are critical. Their threaded or rotating components provide a secure locking mechanism, reducing the likelihood of accidental firings. While modern firearms often incorporate more advanced safety systems, the screwgate remains a durable and effective solution in many traditional and semi-modern designs.