The pulley/cam system grants the user a mechanical advantage, and so the limbs of a compound bow are much stiffer than those of a recurve bow or longbow. This rigidity makes the compound bow more energy-efficient than other bows, as less energy is dissipated in limb movement. The higher-rigidity, higher-technology construction also improves accuracy by reducing the bow’s sensitivity to changes in temperature and humidity.
The riser of a compound bow is the handle in the centre that acts as a base to which the limbs are connected. At the end of each limb are pulleys, usually eccentric and referred to as cams, which are connected by cables and the bow string.
The adjustable sight is also attached to the riser and holds a scope that contains a magnifying lens, usually of between two and eight power, a sight pin and a levelling bubble.
Stabilisers, including long rods that protrude from the front of the riser, and short rods that protrude to the sides or back usually finish with weights, are used primarily to balance the bow when the archer is aiming.
Arrows clip onto the bowstring against a nocking point and usually inside a D-loop, which is a short arc of material that is used to connect to the release aid when drawing the bow.