The icon shows that weapons are not allowed. It is a handgun with a diagonal line going through it. The line goes from the top-left of the gun to the bottom-right.
This No Weapons icon is a responsive icon. This means that it's optimized for four resolutions, from tiny 16x16 until highly detailed 80x80. The style comes from the latest Microsoft Office
, which makes it perfect for any Windows applications, in particular, those with ribbon toolbar control. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 16,000 icons, all in the same style and quality.