Byrna ECO Kinetic .68 Caliber Projectiles 95 PackThe new Byrna Eco Kinetic training recreational projectile is a GAME CHANGER! Byrna Eco Kinetic rounds are one of the lowest priced less lethal projectiles available. More importantly, its water solubility leaves no trace after outdoor use so you no longer need to clean up the remnants of plastic shells after each range session. Simply hose down the practice area with water or just leave it for mother nature to handle. These . 68 caliber Eco Kinetic