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 …

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, …

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.

3 days ago · BANISH Suppressors introduced its BANISH 556, a full-auto rated suppressor with controlled-flow technology that the company claims is the "most advanced 5.56 NATO/.223 Rem. …

Dec 7, 2024 · Get the facts on 5.56 NATO, from its origin and history to its measurements, ballistics, and comparisons to other calibers. The 5.56x45mm ammunition is one of the most widely used and …

Dec 12, 2024 · Developed in the late 1970s, it serves as a balance between the larger 7.62x51mm NATO round and the smaller pistol calibers, offering improved control, higher velocity, and flatter …

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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.