It was developed in 1957 by Remington Arms and Fairchild Industries for the U.S. Continental Army Command of the United States Army as part of a project to create a small-caliber, high-velocity firearm.

223 Remington bolt, semi-auto and lever action rifles for small game, medium game, and predator hunting.

Jan 8, 2026 · Confused about .223 vs 5.56 vs .223 Wylde? This guide breaks down what’s safe to shoot, accuracy differences, and which chamber is best for your needs.

Oct 23, 2025 · When it comes to the 223 vs 5.56, it’s not so much about which one is best, but about the differences between them. The 223 Remington and 5.56 NATO cartridges have identical case …

Take a look at our selection of .223 Remington and 5.56 NATO ammo from top manufacturers. We carry the best .223 Rem and 5.56mm ammo on the market.

Some of Remington’s most popular 223 ammo is our line of UMC ammo. It’s a go-to choice for high volume target shooting or training, offering consistent performance and great value.

The .223 Remington is one of the most influential cartridges in modern firearms history. Revered for its versatility, precision, and adaptability, it has become a mainstay in both military and civilian applications.

The history of .223 ammunition, also known as 223 Remington or 5.56 ammo, dates back to the mid-1960s. Developed by Remington Arms as a commercial cartridge for hunting and varmint shooting.

Dec 7, 2024 · Learn about the 223 Remington cartridge, its history, specifications, ballistic performance, and popular uses for hunting, target shooting, and self-defense.