This is the generation 3 model, it is the latest production with the reinforced valve for greater reliability and durability. The HDR 50 TR50 11 Joules power factory production version comes with a factory warranty. This is the ultimate personal defense launcher, the best you can get for the highest velocity with the most impact power for a .50 Cal system. The Revolver .50 Cal HDR 50 TR50 11 Joules Home Defense Revolver is powered by 12g CO2 located in the pistol grip. It can be stored away and ready for use at the moment needed. Designed with modern styling and dual Picatinny rails for mounting a red dot sight, laser, or flashlight. This pistol features a lightweight polymer frame with internal metal parts including the trigger and hammer. Loading this gun is easy with the circular clip that slides out from behind the stationary cylinder. The clip holds 6 .50 caliber. The most reliable defense launcher in the industry shoots all types of .50 caliber projectiles: Steel Projectiles, Shaped Projectiles, Pepper Projectiles, Rubber Projectiles, Nylon Projectiles This is a factory production version, it comes with a manufacturer warranty. Package Includes: 1 x Revolver .50 Cal 5 x Magazines Specifications: Operation Type: Semi-Automatic Ammunition Type: .50 caliber rubber rounds Ammunition Source: 6 rds Magazine Range: +/- 60ft Velocity: +/- 450fps Impact power: 11 Joules Air-Source: 12g CO2 Warranty: factory warranty