Today I found out that the 5.7x28mm (you remember, the cartridge used in the PDW-1) how now been designated as the 5.7x28mm NATO. This means it will become a standard issue caliber for NATO forces in their FN FiveseveN pistols and FN P-90. Unfortunately, the PDW-1 is still fiction, so it won’t be used any time soon.
So, what does it mean when a caliber is designated NATO? From FN Herstal (the manufacturer) – As a NATO standardized caliber, the 5.7x28mm caliber provides armies with the guarantee of interchangeability between ammunition from different manufacturers and operational efficiency in weapons of this caliber.
So, like the venerable 7.62 x 51mm NATO, the 5.56x45mm NATO, the 9x19mm NATO, and the 12x99mm NATO (aka .50 caliber), the 5.7x28mm gets the same NATO designation. Apparently it’s offered in five different bullets: ball (usually called full metal jacket), tracer, subsonic, frangible, and blank.
Do I now need to change the name of the caliber from 5.7x28mm to 5.7x28mm NATO? Naw, I’ll keep it as is.