The Winchester USA M855 5.56mm ammunition delivers military-specification performance with 62-grain full metal jacket projectiles featuring steel penetrator cores. This green tip ammunition meets NATO SS109 standards and provides consistent accuracy for tactical applications and high-volume training.
What Makes This Different
Unlike standard 55-grain FMJ rounds, the M855 features a steel penetrator tip that enhances barrier penetration while maintaining excellent ballistic performance. The 62-grain projectile provides superior wind resistance and energy retention at extended ranges compared to lighter bullets. Winchester's quality control ensures consistent powder charges and primer seating for reliable ignition and velocity consistency across the entire production lot.Key Features
- 62-grain full metal jacket with steel penetrator core for enhanced barrier performance
- NATO SS109 specification compliance ensures military-grade reliability
- Muzzle velocity of approximately 3,020 fps from 20-inch barrel
- Green tip identification marking for easy recognition
- Boxer-primed brass cases suitable for reloading
- 20 rounds per box, 50 boxes per case (1,000 total rounds)
- Compatible with all 5.56mm NATO and .223 Remington chambers
Technical Specs
- Caliber: 5.56x45mm NATO
- Bullet Weight: 62 grains
- Bullet Type: Full Metal Jacket with steel penetrator
- Muzzle Velocity: 3,020 fps (20" barrel)
- Muzzle Energy: 1,255 ft-lbs
- Case Material: Boxer-primed brass
- Packaging: 20 rounds per box, 50 boxes per case
- Manufacturer: Winchester Ammunition

