5.56 NATO & .223 Remington Ammo

5.56 NATO & .223 Remington Ammo

Shop 5.56 ammo and .223 ammo at Moriarti Armaments for AR-15 rifles, pistols, and other compatible platforms. Browse 5.56 NATO and .223 Remington ammunition for range, target, hunting, defensive, and precision applications. Available options include FMJ, hollow-point, soft-point, polymer-tip, and match loads in popular bullet weights. Whether you're stocking up for the range or selecting a specialized load, compare bullet weight, velocity, projectile design, manufacturer, and your firearm's chamber specifications.

What is the difference between 5.56 NATO and .223 Remington ammo?

5.56 NATO and .223 Remington have very similar external dimensions but differ in chamber and pressure specifications. A rifle chambered for 5.56 NATO can generally fire both 5.56 NATO and .223 Remington ammunition. A firearm marked only .223 Remington should not automatically be assumed safe for 5.56 NATO. A .223 Wylde chamber is designed to accommodate both while supporting accuracy with .223 ammunition. Always follow the firearm manufacturer's ammunition specifications.