A breechblock stop lever for a breechblock carrier, wherein the breechblock stop lever can rotate about a first axis of rotation, and includes a stop arm for retaining the breechblock carrier, the breechblock stop lever comprising:
- a first fastening arm extending substantially radially in relation to the first axis of rotation;
- a second fastening arm extending substantially radially in relation to the first axis of rotation, wherein the first and second fastening arms are for receiving a control element that includes a second axis of rotation.