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News and publicity releases on a .22 center-fire rifle offered for military purposes, the Armalite AR-15, have raised the question as to whether it should replace the present standard M14 rifle of ...

There are two popular types of AR-15 calibers: 5.56x45mm NATO and .223 Remington. The sales of modern sports rifles are high these days, and many people are flocking to the AR-15. What exactly, then, ...

Two of the most popular cartridges today are nearly identical and sometimes considered transposable, but when looking at 5.56 vs .223, there are some key differences. The .223 Remington started as a ...

Some believe the 5.56 NATO was the original military cartridge and that the 223 Remington was the civilian offshoot. That’s not the case. In 1970, NATO (North Atlantic Treaty Organization) affiliated ...

Comparing rifle cartridges is not always as straightforward as it might seem. Just because one cartridge shoots faster, flatter, and hits harder, does not always mean it’s the best option for you.