loading the cartridge body 1 to the gun body the tangential tenon not shown in the figure disposed relatively to the gun body can also be used to go through the through hole 12 disposed on the cartridge body 1 and to work on the oblique push plane 152 disposed at the body portion of the tongue plate 15 the whole body of the tongue plate 15 is pressed by the spring 151 on the rear side therefore when tangentially moved by the elements of the gun body the said oblique push plane 152 pushes and moves toward the compressing spring 151 thereby to make the distal end of the said tongue plate 15 release the last bullet 10 and thus discharge all the bullets 10 the said tongue plate 15 not only provides the limitation for pushing out the bullet 10 on the uppermost aspect when the bullet 10 is used up the said tongue plate 15 also has to retain the said shuttle 22 therefore a shoulder portion 221 can be disposed at the distal end of the tongue plate 15 relative to the said shuttle 22 and away from the dimension of the external shape of the bullet 10 or when the working element of the gun body shoots out the last bullet 10 the action can make the said tongue plate 15 to reversely retain toward the shuttle 22 or other possible methods for achieving the same retaining purpose can also be applied.