Lego minifigure compatible Custom BrickArms Kar98 Scoped Sniper Rifle. BrickArms honors the tradition of the elite German sharpshooter jaeger troopers with the Kar98 Scoped Rifle, The Karabiner 98 kurz, often abbreviated Kar98k. A bolt-action rifle chambered for the 7.92×57mm Mauser cartridge that was adopted in June 1935 as the standard service rifle by the German Wehrmacht.