The Winchester USA M193 5.56x45mm NATO ammunition delivers consistent performance for high-volume shooting at an exceptional value. This bulk pack contains 600 rounds (4 boxes of 150) of 55-grain full metal jacket ammunition that meets M193 military specifications for reliable function in AR-15 platforms and other 5.56 NATO chambered rifles.
What Makes This Different
Winchester's M193 specification ensures this ammunition meets strict military standards for velocity, pressure, and reliability. The 55-grain FMJ projectile achieves approximately 3,240 fps muzzle velocity from a 20-inch barrel, matching the ballistic performance of military-issue M193 ball ammunition. Unlike commercial .223 loads, this 5.56 NATO specification ammunition generates higher chamber pressures for consistent cycling in gas-operated rifles.Key Features
- 600 rounds total in convenient 4-box value pack configuration
- 55-grain full metal jacket bullets with lead core construction
- Boxer-primed brass cases suitable for reloading
- M193 military specification for consistent ballistic performance
- 3,240 fps muzzle velocity from 20-inch barrel
- Compatible with all 5.56 NATO and .223 Remington chambered rifles
- Non-corrosive primers and propellant for reliable ignition
Technical Specs
- Caliber: 5.56x45mm NATO
- Bullet Weight: 55 grains
- Bullet Type: Full Metal Jacket (FMJ)
- Muzzle Velocity: 3,240 fps (20-inch barrel)
- Muzzle Energy: 1,282 ft-lbs
- Case Material: Boxer-primed brass
- Primer Type: Non-corrosive
- Quantity: 600 rounds (4 boxes of 150)
- Manufactured: USA
