According to the manufacturer’s website, “The Gepard GM6 ‘Lynx’ is a semi-automatic anti- material rifle. Thanks to the unique barrel recoil technology (SERO developed), the rifle’s recoil is less than the other rifles’ in the same category, and it makes its portable size only 915 mm. It operates with standard 12.7×107 Russian or standard .50 Browning rounds, and its penetration capacity is not less than the other destroyer rifles’ with longer barrel. Its Purpose to stop or disable targets such as light armoured vehicles, armoured rifle troops, light shelters and buildings, radio- electronical constructions, missile launchers and hovering helicopters from 600-800 m range.” Click here to check out the video, and notice how much the barrel recoils. So what’s it for? . . .
The M3 and M6 are strictly anti-materiel rifles, because the accuracy of the otherwise extremely powerful 14.5mm round degrades rapidly at ranges beyond 1000 meters. Its high destructive power is very efficient in taking out hovering helicopters, APCs or mobile radar stations, however.
Wikipedia forgets to mention waterfowl. They shouldn’t forget waterfowl. ‘Cause then it conforms to the ATF’s guidelines for importation. In theory.