In break-open action shotguns, how are the locking lugs typically secured?

In break-open action shotguns, the locking lugs are typically secured by the top lever or crossbolt cutout. The top lever mechanism plays a crucial role in both opening and securing the action of the shotgun. When the top lever is pushed to the side, it disengages the locking lugs, allowing the gun to open. Conversely, when the shotgun is closed and the top lever is positioned back to its original state, it engages the locking lugs, securing the breech and ensuring that the firearm is safe to fire.

This design not only ensures a reliable lockup when the shotgun is in use but also provides a straightforward method for the user to open the action for loading and unloading. The position and functionality of the top lever or crossbolt cutout are integral to the operation of break-open shotguns, highlighting its importance in the overall design and safety of the firearm.