The Sensei
Member
Can someone help me here?
I am in the market for an AR15 or M4 to use in 3-gun competition. In researching the different makes etc. I noticed a reference to .223 caliber being different than 5.56 NATO. I thought they were the same. If I have a .233 rifle can I use 5.56 NATO and vice versa?
As I have an Armalite AR-15 with 20" barrel/ A2 top...one of my options is to pick up a 16" flattop upper assembly to use on the Armalite. But I want to stay consistent with my current gun and .223 ammo supply. Does it matter whether it is 5.56 NATO or .223 cal?
Thanks in advance for any insight on this.
I am in the market for an AR15 or M4 to use in 3-gun competition. In researching the different makes etc. I noticed a reference to .223 caliber being different than 5.56 NATO. I thought they were the same. If I have a .233 rifle can I use 5.56 NATO and vice versa?
As I have an Armalite AR-15 with 20" barrel/ A2 top...one of my options is to pick up a 16" flattop upper assembly to use on the Armalite. But I want to stay consistent with my current gun and .223 ammo supply. Does it matter whether it is 5.56 NATO or .223 cal?
Thanks in advance for any insight on this.