Barrel for a firearm with locking space, and production process

A barrel for a firearm;

• wherein
• the barrel defines a bore axis;
• the barrel defines a cartridge chamber;
• and
• the barrel defines an integrally-formed locking sleeve including a locking space, the locking sleeve including a plurality of inwardly extending locking lugs that are integrally formed with the barrel, and the locking sleeve defining a plurality of recesses configured to receive bolt head lugs of a bolt head to be introduced into the locking sleeve, the plurality of recesses forming grooves for a bayonet-type coupling between the locking sleeve and the bolt head;
• wherein at least two centering ramps are formed in a transition area between the recesses for receiving the bolt head lugs and the locking space, the centering ramps extending in a direction towards the cartridge chamber in an oblique manner with respect to the bore axis, such that the centering ramps are configured to guide the bolt head in a centering manner when the bolt head is introduced into the locking space of the locking sleeve;
• and
• wherein the recesses forming the grooves for the bayonet-type coupling between the locking sleeve and the bolt head, when viewed in the direction of the bore axis, each exhibit a profile that includes an elliptical segment.

A firearm, comprising a barrel;

• wherein the barrel defines a bore axis;
• the barrel defines a cartridge chamber;
• and
• the barrel defines an integrally-formed locking sleeve including a locking space, the locking sleeve including a plurality of inwardly extending locking lugs that are integrally formed with the barrel, and the locking sleeve defining a plurality of recesses configured to receive bolt head lugs of a bolt head to be introduced into the locking sleeve, the plurality of recesses forming grooves for a bayonet-type coupling between the locking sleeve and the bolt head;
• wherein at least two centering ramps are formed in a transition area between the recesses for receiving the bolt head lugs and the locking space, the centering ramps extending in a direction towards the cartridge chamber in an oblique manner with respect to the bore axis, such that the centering ramps are configured to guide the bolt head in a centering manner when the bolt head is introduced into the locking space of the locking sleeve;
• and
• wherein the recesses forming the grooves for the bayonet-type coupling between the locking sleeve and the bolt head, when viewed in the direction of the bore axis, each exhibit a profile that includes an elliptical segment.

A method for producing a barrel for a firearm, comprising:

• providing a one-piece barrel that defines a cartridge chamber and a locking sleeve, the locking sleeve including a locking space;
• forming at least two recesses in the locking sleeve configured to receive bolt head lugs;
• and
• forming at least two centering ramps in a transition area between the at least two recesses for bolt head lugs in a direction toward the cartridge chamber and the locking space.