Those are dates when a portion of the gun was patented.
Perfect or comfortable is the meaning behind snug as a gun.
Gun - 1997 All the President's Women 1-4 was released on: USA: 10 May 1997
like a gun i meaning a really big gun
A derringer is a small gun.
Tales of the Gun - 1998 Making of the Gun was released on: USA: 1999
A gun moll is a female who handles a firearm. Another meaning for a gun moll is a gangster's girlfriend. The word "gun" is derived from the Yiddish word for "thief".
it originally came from the mafia in the 1940's the would say piece to descuise the fact that they had a gun
Loner with a Gun - 1994 was released on: USA: 1994
Tales of the Gun - 1998 was released on: USA: 1998
GAT : Old slang, meaning gun
a gun store idiot
If you mean "patent" dates, no, that does not necessarily indicate when the gun was manufactured. The patent date indicates when the design was patented.