The Winchester USA 5.56x45mm 62-grain Green Tip (Winchester part no. WM855150) is a bulk case-lot offering of M855-type ammunition, identifiable by its green-painted bullet tip marking the steel penetrator core underneath the copper jacket. Unlike a standard 55-grain FMJ, the 62-grain M855 design adds a steel core for improved penetration through hard targets, the same specification the U.S. military adopted decades ago. This listing is sold as a 600-round case, packed as four 150-round boxes, aimed at high-volume shooters, clubs, and range operators who don’t want to buy single boxes at a time.

Key Specifications

• Chambered in .223 Rem/5.56 NATO, and built to the M855 specification for use in any rifle chambered for the cartridge.
• The 62-grain bullet weight carries a steel penetrator core beneath the jacket, identified by its green tip paint.
• The steel-core design gives it improved penetration through hard targets compared to a standard 55-grain lead-core FMJ.
• This is sold as a 600-round case, packed as four boxes of 150 rounds each.
• Real cost per round works out to about $0.63 based on the full 600-round case price.
• M855-type ammunition has been the U.S. military’s standard 5.56 ball specification for decades, which is why it remains widely available and trusted.
• Bulk case-lot buying like this is built for high-volume shooters, clubs, and range operators who don’t want to purchase single boxes at a time.
• Cases are brass, standard for reliable ignition and reloading.
• It cycles reliably in any rifle chambered in .223 Rem/5.56 NATO, from AR-15-pattern rifles to bolt-action platforms.

Frequently Asked Questions

What does the green tip mean? It marks the bullet as M855-specification, which carries a steel penetrator core beneath the copper jacket for improved penetration on hard targets.

How many rounds come in this case? It’s sold as a 600-round case, packed as four boxes of 150 rounds each.

Is this the same as the military’s issued ammunition? It’s built to the same M855 specification the U.S. military has used as its standard 5.56 ball round for decades.

Buy the Winchester USA 5.56x45mm 62gr Green Tip, 600-Round Case

For shooters who go through 5.56 fast, a full case of steel-core M855 beats restocking a box at a time. Order it from our Winchester lineup at our Lubbock, Texas gun shop and it ships fast to your door, or browse the full rifle ammunition selection for more 5.56 case-lot options.