Crossbows are different from bows in that they have a mechanism that holds their string cocked. Therefore, they are not considered equal to bows, and typically aren't allowed during bowhunting seasons. Arrows used with crossbows are shorter and thicker than bow arrows, and are called "bolts". Modern crossbow is typically a reduced in size compound bow, attached to a synthetic or wooden stock and providing a mechanism for holding an arrow (a "bolt") and the string in a cocked position before releasing a shot. Sometimes crossbows are equipped with a cocking mechanism as well. Mechanical cocking requires less effort from hunter, so draw weight on crossbows reaches up to 165 lbs. Arrows used for crossbows are thicker, heavier and shorter than those for longbows of compound bows, because they must withstand larger stress while releasing the string. Crossbows are capable of speeds over 300 fps, which, combined with a heavy bolt, produces devastating impact in addition to wounding the game. (Barnett Quad 300 pictured).