These .40 caliber push pins are the perfect way to let people know that you mean business when they come to your office. Whether you are a gun enthusiast, prankster or even someone who is looking for something a little bit different, these push pins are one-of-a-kind and will keep all of your important pictures and notes dead on.

The push pins come in sets of four and are all authentic spent .40 caliber handgun rounds. The push pins or bullet shells are all made from brass and nickel. Each one of these thumbtacks has a dimpled primer so you know that each one has been fired at some point. These crafty handgun thumbtacks are also a great way to be eco-conscious, as they are recycled and repurposed, making them an environmentally friendly choice -- as funny as that may sound.