The .510 Beck cartridge was designed as an anti-material solution which is compatible with .308 AR-style rifles. The .510 Beck requires a different barrel, bolt, and magazine. The military model is compatible with the SR-25 but commercial models are coming as well.
This drum magazine for the Beck Defense .510 Beck round is based on the patented X Products .308 50 round drum design. Future models will be skeletonized to help control weight.
Initially, the rounds will be offered in subsonic with weights of 327 to 680 grains. Coming soon.