A Stamford police officer is suing one of the world's largest gunmakers after his pistol accidentally fired and shot him in the leg.

Officer Vincent Sheperis, of the Special Response Team, is suing Sig Sauer for $6 million in damages. He says his P320 pistol was in its holster when it fell to the ground and went off, shooting him in the leg in January.

"My client was in the process of placing the weapon into the back seat of his SUV. It slipped, descended to the ground, and then fired when it hit the ground. Then it struck him in the leg," says Jeffrey Bagnell, Sheperis' attorney. 

Sheperis' lawsuit says the officer has since needed several operations and still hasn't been able to return to full police duty. Sheperis is demanding the gun be recalled or that a label be required warning that the gun is not safe to drop.

The Stamford Police Department has since shelved the gun.

News 12 has learned that Sig Sauer recently issued a "voluntary upgrade" for all P320 pistols, noting that "Recent events indicate that dropping the P320 beyond the U.S. standards for safety may cause an unintentional discharge."