Minecraft wiki entry for Things_not_to_do, associated text: Do not shoot these items. They count as entities, and as such, they can be hit off walls by arrows, using the arrow in the process. In fact, an armor stand is destroyed and does not drop as an item if shot. If the player wants to practice archery, the player should shoot somewhere else. A Target block is a much better option as it does not consume an arrow and can be linked to a Redstone Comparator to show more precise accuracy. A button made of wood can also serve as a nice and cheap target if the player does not have the resources to craft a target block. Stone buttons also work, but it's better to use the stone for something else unless you have a lot of stone.