5.56 vs .223: Guns & Gear|S5
This video clarifies the critical differences between 5.56 NATO and .223 Remington cartridges, emphasizing that they are not interchangeable in all firearms. It highlights that firearms marked for 5.56 can safely fire both, while firearms marked for .223 only should not chamber 5.56 due to potential safety risks. Exceptions like certain Ruger models are noted, along with the concept of hybrid chambers designed for dual compatibility.











