Frontier FR400 300 Blackout 125gr FMJ ammo offers military-grade reliability, accuracy, and value—20 rounds per box. Great for training or bulk use. Read more.
The Frontier Cartridge FR400 300 Blackout 125gr Full Metal Jacket (FMJ) is engineered for shooters seeking military-grade performance and reliability. Loaded to NATO specifications, this centerfire rifle ammunition delivers consistent accuracy, clean shooting, and dependable feeding. Ideal for range training, tactical drills, and high-volume shooting, each box contains 20 rounds of brass-cased, boxer-primed ammo. Frontier, a collaboration between Hornady and Lake City Army Ammunition Plant, ensures quality control and ballistic precision in every shot. Whether you're building your stockpile or training regularly, the FR400 is a solid, affordable choice.