.223 or 5.56 NATO

[bigbob76]

Yes I used the search button first. I see that the Wylde chamber makes it possible to fire both so does that mean if I have an upper chambered for 5.56 NATO that I can't use .223? I'm hoping I won't get hammered to bad for my ignorance here!

[glockk9mm]

you can shoot .223 out of the 5.56, not the other way around tho.

[USN CHIEF]

Just like glockk9mm said.

To the OP, don't feel bad, it took me a while to learn what you just asked. It is a valid question.