Planet Terror (2007) on Netflix

In a rural town in Texas, go-go dancer Cherry Darling (with a leg/machine gun), decides to quit her low-paying job and find another use for her numerous 'useless' talents. Cherry's ex-boyfriend, El Wray, at the Bone Shack, a restaurant owned by J.T. Hague, a group of military officials, led by the demented Lt. Muldoon, are making a business transaction with a scientist named Abby for a deadly biochemical agent known as DC2 codename "Project Terror", but when Muldoon learns Abby has an extra supply on hand, he attempts to take Abby hostage and Abby intentionally releases the gas into the air. As gun-legged Cherry Darling and one man wrecking crew El Wray try to save the world from a horde of flesh-eating zombies.