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 late 1970s in …

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 all skill levels.

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.

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Bulk 5.56x45mm NATO Ammo for sale from top manufacturers today. Load up with in-stock bulk M193 and M855 at CheaperThanDirt.com and save!

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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 M16 platforms, …

Shop 556 ammo from top brands like Federal Ammunition, Hornady, Magtech, & more. Top customer service, fast shipping & best prices at Primary Arms.

Dec 4, 2024 · While often referred to simply as “.556 ammo,” a vast array of specialized rounds exist, each designed for specific purposes and offering distinct performance characteristics. These …

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