[URL=https://ammunitionseek.com/product/5-45x39-ammo/]5.45x39 ammo[/URL] ammunition is a lightweight, high-velocity cartridge primarily used in the AK-74 rifle and its variants. Developed in the Soviet Union in the 1970s, it was designed to improve on the performance of the older 7.62x39mm cartridge. The 5.45x39mm round features a smaller, lighter projectile with a pointed tip, offering better ballistic performance and armor-piercing capabilities compared to its predecessor.