Gregory Anthony McFarland Jr., 24, was convicted May 26 of felony assault with a firearm, gun enhancements, being a felon in possession of a firearm and residential burglary, the San Francisco Chronicle reported Monday.
Police said McFarland and some friends crashed a Daly City party March 25, 2009, and refused to leave when asked. Investigators said McFarland, who was "extremely intoxicated," brandished a .380 semiautomatic handgun and threatened to shoot the revelers.
However, another partygoer, who is a mixed martial artist, "promptly executed a flawless wrist lock, nearly breaking the suspect's wrist," San Mateo County District Attorney Steve Wagstaffe said.
McFarland fled without his gun, only to be found by police vomiting in a neighbor's yard.
He faces as much as 20 years and eight months in prison at his sentencing July 8.