There is an AR-15 which shoots .50 cal bullet. It is called a .50 Beowulf, and it is extremely rare to ever see one. You have a better chance of seeing Bigfoot playing checkers with a Chupacabra, than holding a .50 Beowulf AR-15 that weighs 30+ pounds.quash said:
Somewhere out there is an AR-15 modified to fire .50 caliber rounds. Did she hold one like that? Maybe. If she had a history of credibility I'd cut her just that much slack. Nope.