Bipods are commonly used on rifles and machine guns to provide a forward rest and reduce motion. They are also seen on other long-barrelled weapons. Bipods permit shooter to easily rest a weapon on objects, like the ground or a wall, reducing their fatigue and increasing accuracy and stability. Bipods can be of fixed or adjustable length. Some can be tilted and also have their tilting point close to the barrels central axis, allowing the weapon to tilt left and right. Some designs also allow the airsoft gun to be rotated side to side. There are three ways for bipods to be folded away from the shooter, towards the shooter, or into a vertical foregrip.