or some other firearm with its top geometry and it is slanted in a way known in the state of art which allows the rounds stacked in a staggered configuration inside the magazine to come out one at the time one side wall contains numbered holes that allow the operator to visually check how many rounds are remaining in the magazine the bottom part of the magazine body 1 is completely open and the follower 2 and the spring 3 are inserted into the magazine through it after that the magazine base 4 is locked onto the magazine body 1 fig3 shows the track guides 1 b on the very bottom of the magazine body 1 which fit into the compatible grooves 4 b on the magazine base 4 such a way of attaching the magazine base 4 onto the magazine body 1 is known in the above mentioned state of art the follower 2 is constructed in a way known previously known in the state of art the follower 2 can move under spring 3 tension through the magazine body 1 simultaneously pushing the rounds stacked in a staggered configuration into the mechanism of a pistol or some other firearm the construction of the follower 2 allows for the whole spring 3 except for the its first turn to be fully fitted inside the follower 2 as shown in fig8 and 9a the spring 3 is of a spiral shape and its first turn on one side.