A biopsy gun having a cannula and a stylet guided in the cannula, the biopsy gun further comprising: a housing, a cannula carriage for moving the cannula, a stylet carriage for moving the stylet, wherein the cannula carriage and the stylet carriage can be tensioned by a tensioning grip from an initial position into a tensioning position against respective springs, wherein the stylet carriage has a stylet snap-in hook that is engaged with a stylet carriage holding surface of the housing when the stylet carriage is in its tensioned state, wherein the cannula carriage has a cannula snap-in hook that is engaged with a cannula carriage holding surface of the housing when the cannula carriage is in its tensioned state, wherein the housing has a first key by the operation of which the engagement of the stylet snap-in hook with the stylet carriage holding surface by contact with the first key is released, and a second key by the operation of which the engagement of the cannula snap-in hook with the cannula carriage holding surface is released by contact with the second key, wherein the first key has a lug projecting under the second key, so that an operation of the second key leads to an operation of the first key, wherein the first and second keys (19, 20) are elastically connected to the housing via respective main connecting elements (22, 23), characterized in that the first key is elastically attached to the housing via an additional connecting element, the additional connecting element being arranged at a location of the first key that is opposite to the location at which the first key, when operated, gets into contact with the stylet snap-in hook. a housing, a cannula carriage for moving the cannula, a stylet carriage for moving the stylet, wherein the cannula carriage and the stylet carriage can be tensioned by a tensioning grip from an initial position into a tensioning position against respective springs, wherein the stylet carriage has a stylet snap-in hook that is engaged with a stylet carriage holding surface of the housing when the stylet carriage is in its tensioned state, wherein the cannula carriage has a cannula snap-in hook that is engaged with a cannula carriage holding surface of the housing when the cannula carriage is in its tensioned state, wherein the housing has a first key by the operation of which the engagement of the stylet snap-in hook with the stylet carriage holding surface by contact with the first key is released, and a second key by the operation of which the engagement of the cannula snap-in hook with the cannula carriage holding surface is released by contact with the second key, wherein the first key has a lug projecting under the second key, so that an operation of the second key leads to an operation of the first key, wherein the first and second keys (19, 20) are elastically connected to the housing via respective main connecting elements (22, 23), characterized in that the first key is elastically attached to the housing via an additional connecting element, the additional connecting element being arranged at a location of the first key that is opposite to the location at which the first key, when operated, gets into contact with the stylet snap-in hook.