Button releases ammo clip in a gun
Depress and hold the magazine release button, pull down on magazine.
Depress magazine release
Load cartridges into the magazine, lock magazine into magazine well, draw back bolt and release.
LPGA Magazine - 1993 was released on: USA: 1993
Evening Magazine - 1976 was released on: USA: August 1976
If you mean the magazine, there is a magazine release button on the left side of the gun. You press the button and the magazine comes out.
Sin Magazine - 1965 was released on: USA: 19 February 1965
Lifestyle Magazine - 2001 was released on: USA: 7 January 2001
The Magazine Girl - 2010 was released on: USA: 23 May 2010
Magazine Cooking - 1914 was released on: USA: 14 November 1914
Apples Magazine - 1997 was released on: USA: 1 January 1997
Creation Magazine LIVE - 2011 was released on: USA: 2011