The Byrna SD (Self Defense) Basic Projectile Launcher Kit comes with the essential components to begin your less-lethal personal defense journey. The Self Defense Launcher has improved ergonomics with honeycomb grip panels for superior control, upgraded 3-blade fixed sights, a flat trigger with a 6.5 lbs. pull, and ambidextrous safety. A single 5-round magazine houses five .68 caliber Kinetic projectiles, which are included with the kit. The Kinetic projectiles are made from a hard, solid plastic which does not break on impact. These projectiles can be used for practice, or to discourage or delay an attacker. The Byrna is powered by an 8-gram CO2 cartridge. The Byrna SD Projectile Launcher works with all Byrna Less-Lethal projectiles and gives you the ability to defend yourself from further distances than with handheld pepper sprays.