DESIGN OF A SPORTS SUBMACHINE GUN MPM 9 „BOHR”. PART II – BASIC CONSTRUCTION CALCULATIONS

The aim of this work was to design a sports submachine gun based on a review of current design solutions used in this type of weapon and to create preliminary technical assumptions. The scope of work included the selection of a cartridge for the submachine gun, the selection of the barrel length, the calculation of the outer diameter of the barrel, the selection of the mass of the bolt and the return spring as well as the calculation of the bolt kinematics, and the preparation of a functional model using the additive technique, checking the correct operation of the weapon's mechanisms and indicating possible design improvements. Part II presented the basic design calculations of the MPM 9 "Bohr" submachine gun.