The 5.45×39 ammo was developed by the Soviet Union as a replacement for the 7.62x39mm round. It features a smaller bullet diameter of 5.45mm, allowing for higher velocities and flatter trajectories. With its high velocity and relatively light bullet, the 5.45×39 ammo cartridge offers excellent long-range performance and reduced recoil https://ammunitionseek.com/product/5-45x39-ammo/