I just saw a fired 5.56x45mm casing made by “IVI” in 2005. The headstamp layout is like that of US made 5.56 with the NATO symbol at 12 o’clock the factory code at 8 o’clock and the two-digit year code at 4 o’clock. What makes this headstamp different is that the factory code has a “dot” after it: “IVI.” I know in other instances, a dot or dots in the headstamp indicates that the case was made by an outside vendor. Is this the case here? Could it indicate that the ammunition was made FOR a US military contract? This case was found in a lot of mixed military and commercial headstamped 5.56 and .223 from a US source.