Well it wasn't really created it kind of started with sling shot and evolved if you want to get technical about it the Chinese did
Gun for You was created in 1997.
Gun Arvidssen was created in 2009.
The Gun - band - was created in 1970.
The Zap Gun was created in 1967.
They Gave Him a Gun was created in 1937.
The Money or the Gun was created in 1989.
The Gun - novel - was created in 1933.
If I Had a Gun... was created on 2011-12-26.
Soldier's Gun was created in 1985.
The Smoking Gun was created in 1997.
The Gun Club was created in 1980.
Gun Fight was created in 1975.