Frontier Cartridge FR604 5.56 NATO 55gr FMJ Ammunition

Stock up and stay ready. Frontier Cartridge FR604 delivers Hornady-engineered reliability in a high-count 5.56 NATO load built for shooters who train hard and train often. This 55-grain full metal jacket load feeds flawlessly in AR-15 and M16-pattern rifles, offering the consistency and quality you expect from Hornady at a volume price that makes sense for serious range sessions.

Key Features:

• 55gr Full Metal Jacket: Classic weight for reliable feeding and consistent downrange performance
• Hornady-Engineered Components: Military-grade bullets and primers for shot-to-shot consistency
• 5.56 NATO: Compatible with all 5.56 NATO and .223 Remington chambered rifles
• Brass Cartridge Cases: High-quality reloadable brass construction
• Non-Corrosive Primers: Consistent ignition in all conditions

Performance Benefits:

• Reliable cycling in AR-15, M16, and other 5.56 NATO platforms
• Consistent velocity and accuracy shot after shot
• Reloadable brass cases add long-term value for handloaders
• Hornady quality control ensures lot-to-lot consistency

Frontier Cartridge Heritage:

• Backed by Hornady's legendary engineering and quality control
• Military-grade components manufactured to exacting tolerances
• Trusted by competitive shooters and trainers nationwide
• Designed for shooters who demand reliability at volume

Applications:

• High-volume target shooting and range training
• Competitive shooting and matches
• AR-15 and M16 platform optimization
• Tactical and field use

Specifications:

• Caliber: 5.56 NATO
• Bullet Weight: 55 grain
• Bullet Type: Full Metal Jacket (FMJ)
• Quantity: 250 rounds per box
• Case Type: Reloadable brass
• SKU: FR604
• Compatibility: 5.56 NATO and .223 Remington chambered rifles

Frontier Cartridge FR604 — Hornady quality by the case, built for the AR shooter who never stops training.