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The 223 Remington (designated as the 223 Remington by the SAAMI and 223 Rem by the CIP) is a rimless, bottlenecked rifle cartridge. 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. The 223 Remington is considered one of the most popular cartridges and is currently used by a wide range of semi-automatic and manual-action rifles as well as handguns.
In the US Army, the cartridge is referred to as "Cartridge, 5.56 mm ball M193." The 5.56×45mm NATO was also developed from the 223 Remington.

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  1. TheBrownBear

    Is 300BLK gaining more popularity?

    Last summer I bought a 300blk as a first rifle purchase and at the time my friends who are gun enthusiasts thought it was a bad purchase because the ammo was so expensive compared to the 22L, 223, and 556, but to be honest I just wanted to be different because none of them owned one.Lol! I’ve...
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