What type of release is NOT a characteristic of multi-barrel type weapons?

Multi-barrel type weapons are designed to fire multiple rounds either simultaneously or in quick succession. A characteristic of these systems is that they can either have several barrels firing together or a mechanism that allows them to fire in a specific sequential order. Options such as intermittent release, sequential fire capabilities, and multi-target engagement align with the operational traits of these weapons, which emphasize increased firepower and the ability to engage multiple targets efficiently.

The usage of a single bolt assembly, however, is not characteristic of multi-barrel systems. In these weapons, multiple barrels often require distinct bolt mechanisms for each barrel or a more complex firing arrangement that accommodates the simultaneous operation of several barrels. A single bolt assembly would suggest a simpler, possibly single-barrel design, which contradicts the multi-barrel configuration as it implies limited firing capability and fewer simultaneous discharges. Therefore, the notion of a single bolt assembly does not fit within the context of multi-barrel type weapons, making it the correct answer in this scenario.