Using an advanced multi-stage combustion chamber and customized cartridge and bullet the updated design brings stopping power and light weight 5.56mm ammunition into the operators. The design turns the 5.56 into an effective round for combat at a lower cost. The smaller caliber and lighter bullet are made accurate through internal porting, redesigned shell and casing and multi-stage combustion chamber. The smaller round allows higher velocity and kinetic energy with the redesign. The round produces significantly less recoil that the 7.62 with speeds averaging well over 2400 feet per second.