Some. I own a Beretta 92FS. It's a variation of the M9 used by the military. Both my gun and all M9s used in the US military are made in the US. However, you can purchase Italian made Beretta guns.
US obviously because of gun crime they should put more laws on guns duuh
Yes.
there is an unknown amount of guns used by the American army
FBI Uniform Crime Report is what you need to look up.
Yes, Winchester guns are made in the U.S.A. i know this because i own one and on the barrel it say made in the U.S.A.
No one site has the answer. Try the FBI Uniform Crime Report and the CDC web site
You will have to be more specific. The entire world? The US? Europe? Central or South America? Armed conflict or crime victim? Suicide? The FBI Uniform Crime Report will get you some US data.
Obviously, if used responsibly, guns can be used to protect people. A gun is a tool; used for the purpose it was intended, it can be a deterrent or can be used for defense.
World wide, there is no uniform data or records. For the US, go to the FBI Uniform Crime Report.
For the US, that information is contained in the 2009 FBI Uniform Crime Report.
Not many tools of any kind are made in the US any more. There are a few air nail guns that are still manufactured in the US, including the Paslode Powermaster Plus and a few Fasco models.