Breechblock of a weapon system and weapon system with the breechblock

A weapon system comprising:

• a weapon barrel that forms part of returning masses;
• and
• a breechblock comprising:
• a breechblock carrier;
• and
• a breechblock head carried by the breechblock carrier,
• wherein the breechblock carrier has a control cam,
• wherein the breechblock head comprises a control pin that engages in the control cam and is guided therein,
• wherein at least one slide is attached to the breechblock carrier and engages with the breechblock head, the at least one slide being a locking slide,
• wherein the control cam is divided into a plurality of cam sections and comprises at least four cam sections that include a first cam section, a second cam section, a third cam section and a fourth cam section,
• wherein a part of the second cam section and the third and fourth cam sections are used fora return of the returning masses, and after the return of the returning masses ends, the fourth cam section is used for the advance of the returning masses and the third cam section is used for the advance of the returning masses without the breechblock head,
• wherein the third cam section enables unlocking of the breechblock head during the return of the returning masses, after a shot has been fired, with the breechblock carrier being fixed,
• wherein, during the return of the returning masses, an unlocking of the breechblock occurs and during the advance of the returning masses, an extraction of an empty cartridge case occurs via an extractor claw, such that the at least one slide is overrun during the return of the returning masses, and during the advance of the returning masses, the at least one slide engages and holds the breechblock head in a locking position, and
• wherein, during an operation of the weapon system, the locking position is released by the at least one slide and the breechblock head is pushed into a forward open position associated with the first cam section of the control cam by a weapon drive or breechblock drive.