The Byrna SD Kinetic Kit comes in a protective, zippered carrying case with everything you need to get started: One Byrna SDXL Launcher, two 5rd magazines, two Byrna 8-Gram CO2 Cartridges, two 5rd tubes of Byrna Kinetic Projectiles, One 5rd tube of Byrna Eco-Kinetic Projectiles, One Byrnanation Medallion. The Byrna SD XL is the successor of the Byrna HD. It has been re-engineered for optimal performance. Powered by compressed air (12g CO2), the Byrna SD XL shoots .68 caliber round kinetic chemical irritant projectiles that can disable a threat from up to 60ft away.