Bolt having an extractor for cartridge cases , comprising a cylindrical body , on which, on the barrel side, a locking portion having an breech face , at least two radially outwardly projecting locking lugs , and, starting from the breech face , running rearwardly, a groove-shaped recess having an undercut for receiving the extractor and a leaf spring are formed, and an extractor , which, viewed in the installed state, has a first lever arm on the barrel side with an inwardly protruding, hook-shaped extractor claw , and, in a central portion, an inwardly projecting bearing protrusion and a second lever arm with a rearwardly projecting spring bearing portion and which is designed to be mounted on the body so as to be pivotable about an extractor axis and to interact with the leaf spring to pretension the extractor characterized in that - the bearing protrusion is designed to be hook-shaped so as to abut against the extractor axis in the installed state with a bearing opening open rearwardly, and has a contacting surface on the barrel side, and - on the body , the groove-shaped recess for receiving the leaf spring is laterally open at least partially on one side tangentially to the circumferential direction, via an insertion portion , and is designed to merge laterally and/or rearwardly into the undercut , and - the body has a cavity for receiving the bearing protrusion relative to an imaginary plane of the recess in the region of the extractor axis . an extractor , which, viewed in the installed state, has a first lever arm on the barrel side with an inwardly protruding, hook-shaped extractor claw , and, in a central portion, an inwardly projecting bearing protrusion and a second lever arm with a rearwardly projecting spring bearing portion and which is designed to be mounted on the body so as to be pivotable about an extractor axis and to interact with the leaf spring to pretension the extractor characterized in that - the bearing protrusion is designed to be hook-shaped so as to abut against the extractor axis in the installed state with a bearing opening open rearwardly, and has a contacting surface on the barrel side, and - on the body , the groove-shaped recess for receiving the leaf spring is laterally open at least partially on one side tangentially to the circumferential direction, via an insertion portion , and is designed to merge laterally and/or rearwardly into the undercut , and - the body has a cavity for receiving the bearing protrusion relative to an imaginary plane of the recess in the region of the extractor axis . - the bearing protrusion is designed to be hook-shaped so as to abut against the extractor axis in the installed state with a bearing opening open rearwardly, and has a contacting surface on the barrel side, and - on the body , the groove-shaped recess for receiving the leaf spring is laterally open at least partially on one side tangentially to the circumferential direction, via an insertion portion , and is designed to merge laterally and/or rearwardly into the undercut , and - the body has a cavity for receiving the bearing protrusion relative to an imaginary plane of the recess in the region of the extractor axis . <EOS>