The HDR 50 is a revolver with visible strengths: large caliber (.50), enormous muzzle energy and imposing appearance. The easy-to-load rotary magazine holds six .50 caliber rounds that are fired up to 7.5 Joules. Power is provided by a CO₂ cartridge located in the grip. A light tap on the cap's quick-drill system is all it takes to pierce the cap, and the optical and tactile...