Rob Allen open muzzle offers a clear line of sight, making aiming easier and far more accurate. The design is intended to be used with a double powerband setup to deliver maximum power to each shot. The small profile of the muzzle offers minimal drag and weight in the water. The spear is securely held in the open muzzle by the line and can be led left or right over the muzzle ensuring comfort for both left and right-handed divers. To add an additional element of durability the muzzle has been constructed with a 30% glass reinforced nylon.