Inventor Martin Grier had an early interest in firearms, gunsmithing, and the shooting arts. The acquisition of bullet casting and reloading equipment facilitated extensive training in all aspects of firearms and ammunition and resulted in a comprehensive understanding of the limitations of existing firearms. Martin grew weary of dealing with jams and reloading individual rounds into magazines. One day, after preparing a new box of ammunition for reloading, Martin conceived the idea for a firearm that enabled the entire ammo block to be slid into the magazine, streamlining the reloading process. Martin also intended for the design to effectively address overheating and jamming. To accomplish this, almost every aspect of firearm design had to be reinvented.