What type of locking system does the SVD rifle use?

The SVD (Snayperskaya Vintovka Dragunova) rifle employs a rotating bolt locking system, which is significant for several reasons. This mechanism enhances the rifle's reliability and accuracy, allowing for a secure lock-up between the bolt and the chamber when the rifle is fired. The rotating bolt design means that as the bolt is closed, it rotates into a locked position, securing the breech and ensuring that the chamber is sealed properly during firing. This is particularly important for a sniper rifle, as it needs to maintain a high degree of accuracy and stability during operation.

Additionally, the rotating bolt system allows for smooth cycling of the action, whether the rifle is being manually operated or firing semi-automatically. This contributes to the overall performance of the SVD, making it effective in varied combat scenarios.