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.

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.

Jul 18, 2025 · The .223 Remington is one of the most popular centerfire cartridges in history and has seen renewed attention as a big-game round in recent years. The truth, however, is that it’s been a …

Find a full line of 223 Remington ammo from all major brands at the best prices.

Feb 23, 2022 · Is 223 Remington just for AR-15s? Is it different from 5.56mm NATO? What are its uses? Here are the answers to all of your 223 Remington questions.

The .223 Remington has become one of the most popular cartridges. It is used in a wide range of semiautomatic and manual-action rifles and even handguns, such as the Colt AR-15, Ruger Mini-14, …

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

4 days ago · 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.

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.

.223 Remington Rifle Ammunition is a versatile cartridge renowned for its flat trajectory, mild recoil, and adaptability across various shooting disciplines. Originally developed in 1957 for the Armalite AR-15, …