Abstract: The present invention relates to an improvement to individual firearms; the technical field of the invention is that of manufacturing firearms. A firearm includes a pin extending crosswise into the magazine well, mounted at at least one of its two ends in a respective recess provided in the left or right side walls of the magazine well; said pin extends inside said magazine case, passes through at least one of the left or right side walls of said magazine in which an orifice is provided; said pin is situated in the immediate vicinity of a bottom abutment limiting the stroke of said cartridge lift, i.e. it is situated at a short distance from said abutment, as measured along the longitudinal axis ZZ in which the cartridges are stacked.