The DSR-50 is a bolt-action anti-material rifle developed and marketed by DSR-precision GmbH of Germany, and is essentially an upscaled DSR-1 chambered in .50 BMG (12.7×99mm NATO).Manufactured by DSR-Precision GmbH, the DSR-50 is based on the DSR-1 sniper rifle and includes modifications necessary to the fire the more powerful .50 caliber round, including a hydraulic recoil buffer in the buttstock and an innovative muzzle attachment.