The Incredible Hulk #105

Prowling New York with Betty in his clutches, the Hulk transforms back into Banner and is shot in the leg by thugs. The product of a nuclear test conducted by the U.S. and captured by the Chinese, the Missing Link is brought to New York and unleashed. He crosses paths with the wounded Hulk and the two battle. Mr. Fantastic creates a Hulk-stopping weapon designed by Banner and Talbot takes the machine to hunt for him. Not realizing that he is fighting a dangerous foe, Talbot shoots the Hulk with the weapon turning him back into Banner just as the Missing Link begins another assault.