Pistol with barrel locking device

A pistol, with a housing (1), a barrel slide (2) which is guided displaceably in the longitudinal direction thereon, a barrel (3) which is guided in the barrel slide, and a locking device which is formed by a head (22) of the barrel (3), a locking block (20) secured in the longitudinal direction and a pair of locking bodies (24, 25) guided in a transverse groove (23) of the head (22), which locking bodies (24, 25) engage in recesses (27) on the inside of the barrel slide (2) by the action of the locking block (20) and thus lock the barrel (3) to the barrel slide (2), wherein the locking block (20) has two first wedge surfaces (21) which are symmetrical about a longitudinal center plane, the locking bodies (24, 25) are elongated cylinders, the circumferential surface of which has two parallel planar guide surfaces (35, 36) resting in the transverse groove (23), a second wedge surface (38) which faces the other locking body (25, 24) in each case and interacts in a sheetlike manner with the first wedge surfaces (21) of the locking block (20), and an engagement surface (40) which faces away from the other locking body (25, 24) in each case and is intended for engaging in the respective recess (27) of the barrel slide (2).