The Winchester Usa Service Grade 5.56mm Nato 55gr Full Metal Jacket 20/Box is built for shooters who demand consistent performance from their training and practice ammunition. Using quality Winchester components and a non-expanding full metal jacket bullet, this load is designed to cycle smoothly and deliver dependable accuracy shot after shot.

This 5.56mm Nato cartridge features a 55-grain full metal jacket projectile, making it well suited for range use, target work, and high-volume training sessions where predictable ballistics matter. With 20 rounds per box and reloadable brass cases, it offers a practical option for maintaining skills and refining fundamentals. Winchester’s long-standing reputation for reliability and ammunition craftsmanship helps ensure this Service Grade line performs to expectations every time you head to the range.

• Manufacturer: Winchester
• Model: Usa Service Grade 5.56mm Nato Ammo
• Caliber: 5.56mm Nato
• Bullet Type: Full Metal Jacket
• Bullet Weight: 55 Grains
• Rounds Per Box: 20