E5B said:I'll let Fly Navy answer the question about the 5.8. Tactical weapons are right up his alley.
Sure that's not a 5.7x28mm? The 5.7x28mm is used in the FN P90 and the FN Five-SeveN.
You've probably heard of the Five-SeveN, it's been under media assault this year because it and the ammunition has been made available for public release. The media and anti-gunners don't like it.