A pistol with a on a trolley (2) and / or run (3) mounted sighting device, which has a rear sight (10) and a front Weft end of the barrel (3) or of the carriage (2) mounted grain (9) , should be equipped for a quick directing. This is achieved in that the rear sight (10) in a relatively small distance (11) is arranged behind the grain (9) and carried out with this as one-piece sighting unit (7). The sighting unit (7) has below the grain (9) fastening means (13) with appropriate fastening means (6) cooperating on the running carriage (2).
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