| 摘要 |
<p>Rotary lug breeches and weapons including such rotary lug breeches are disclosed. An example rotary lug breech includes a bolt carrier. Wherein when releasing the bolt, a cam section of a receiver converts a releasing motion into a screwing motion to release a cartridge. During the screwing motion, a first stud surface interacts with the cam section. During a locking process, the first stud surface engages the cam section to perform a pre-control process that rotates a control pin in a slot from a releasing position in which an advancement of the bolt carrier exerts substantially no torque on the bolt, to a control position in which a first slot surface of the slot interacts with the control pin. When the bolt carrier moves forward, the bolt carrier exerts a torque on the bolt to enable the bolt and the bolt carrier move relative to one another.</p> |
