The M76 is the "weapon that earned the honor of being the first zombie apocalypse gun," writes War is Boring, which looks at the peculiar history of the submachine gun that has been the firearm of choice in multiple films, including The Omega Man and The Dark Knight.
Why are they calling this the first zombie apocalypse gun? The Omega Man was just a remake of The Last Man on Earth. Shouldn't Vincent Price's Webley or his PPSh hold that honor? And the creatures were mutants/vampires not zombies so maybe it should be the Winchester from Night of the Living Dead.