The 5.56×45mm NATO (official NATO nomenclature 5.56 NATO, commonly pronounced "five-five-six") is a rimless bottlenecked centerfire intermediate cartridge family developed in the …

Oct 30, 2025 · 556 ammo, officially known as 5.56x45mm NATO, is a rifle cartridge developed in the late 20th century for military and civilian use. It is the standard round for the AR-15 and …

5.56mm cartridges are ideal for target shooting, home defense, and varmint hunting. Their lightweight design allows for quick follow-up shots and mild recoil, making them accessible for …

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Oct 23, 2025 · 223 vs 556: What’s the Difference? The cartridge cases of the 223 Rem and 5.56 NATO appear identical on the outside, but 556 cases can have minutely thicker case walls.

Jun 29, 2025 · The 556 x 45mm NATO round is referred to as 556 ammunition and is incendiary for rifles used in combat. The speed, price, accuracy and low recoil of the cartridges make …

Shop 5.56 ammo for sale at Sportsman’s Outdoor Superstore. 5.56 NATO was developed to replace the 7.62x51mm NATO cartridge, which had been in service since 1954. Servicemen …

Freedom Munitions manufactures affordable reloaded and new 5.56 ammunition suitable for the range, hunting, competition, or self-defense.

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