New cuttlefish shape speargun with considerable mass and rigidity featuring an integrated Enclosed Trac spearshaft guide. This system keeps the shaft perfectly straight during the shooting phase even with double bands avoiding any possibility of shaft whip. The outcome is more power, accuracy and range than traditional open track guns of comparable size. The increased volume of the speargun barrel allows for an optimal balance of the gun. The Cayman E.T also features a weight system in the muzzle to counteract the buoyancy of the muzzle.