Winchester Lake City Ammunition 5.56x45mm NATO - 55 Grain Full Metal Jacket - 600 Rounds 

Winchester is the largest manufacturer of small caliber ammunition for the U.S. military. Proven in battle for more than 100 years, we’ve delivered trusted ammunition products for civilians, law enforcement and military. With the addition of the Lake City Army Ammunition Plant, we’re proudly bolstering our commitment to support the modern Warfighter by designing and producing the highest-quality ammunition products.

Product Specifications

• Cartridge - 5.56mm 
• Grain Weight - 55 Grains
• Muzzle Velocity - 3240 Feet per Second
• Muzzle Energy - 1282 Foot Pounds
• Case Type - Brass
• Reloadable - Yes