Adrián Guerra is an Argentine magician who won the first price in card magic at the Fism 1994 (Yokohama, Japan)
Invisible Shooter is a clever and useful gimmick that allows you as a tool to perform many different routines with cards.
It fits into any playing card case, It is solid, sure fire and versatile.
Invisible Shooter includes a complete video tutorial, replacements. And play with it, you will find many other ideas and uses.