20 Rounds of 55gr FMJ .223 Ammo by Winchester

Do you hear that? It’s your AR-15 calling out to you. You may not understand it, but we speak Gunese and can interpret for you. It’s saying “I need ammo!”

Order a few boxes of Winchester USA 223 Rem ammo and your rifle will finally clam up. This cartridge is exactly what you want for tactical training, target practice and laid-back plinking, as it’s loaded with the 223’s most popular 55 grain full metal jacket projectile. While the bullet may fragment if it hits soft tissue, its simple non-expanding design makes it an economical choice for high-volume shooting. The FMJ’s streamlined profile helps it hug a nice and flat trajectory, and its complete lack of steel makes it totally nonmagnetic.

These American-made cartridges are loaded with durable heat-treated cases. You can plainly see where the brass was annealed at the factory, which makes it more supple so it can efficiently seal off the chamber during ignition and then return to its original dimensions. These cases are new and not reused, and their non-corrosive Boxer primers make them a natural pick for handloading.