Saravy Sok, 22, of 88 Forthill Ave., Lowell, who was identified by prosecutors as a member of the Tiny Rascals Gang-Grey, a violent street gang with ties to California, was arraigned on gun charges and a charge of armed assault to murder after the Sunday morning shooting outside 12 Benefit St. According to police and Assistant District Attorney Roberta O’Brien, a 28-year-old man was at a party at 12 Benefit St. when he got into a minor verbal argument with another partygoer. The 28-year-old man decided to leave the party, but outside the man he had argued with challenged him to a fight. The two men had begun to fight when Mr. Sok arrived to help his friend, Ms. O’Brien said. “As they were fighting, this man pulled out a gun and started shooting,” she said in court yesterday. The 28-year-old was shot once in the shoulder and twice in the leg. The injuries were not life-threatening, but the victim may suffer nerve damage, Ms. O’Brien said. The victim walked into the emergency room at St. Vincent Hospital just after midnight Sunday with the gunshot wounds. Police were called to the hospital and spoke to the victim. He told police he recognized the shooter’s girlfriend, and police were able to identify the suspect. Lowell police told city investigators that Mr. Sok was a member of the TRG-Grey gang and gave them a booking photograph from a previous arrest. Mr. Sok was identified as the suspect through witnesses, detectives and members of the Shooting Response Team. Lowell police located Mr. Sok Monday night and arrested him on a warrant for the shooting. In 2008, Mr. Sok was among a large group of gang members in the Lowell area arrested on a variety of charges. Mr. Sok was charged in federal court with weapons offenses. In mid-2009, he was sentenced to serve 32 months in prison with three years of supervised release. Ms. O’Brien said Mr. Sok was still on supervised release in the federal case when last weekend’s shooting occurred. Federal authorities said members of the TRG-Grey gang are responsible for many acts of violence in Lowell over the past decade. Mr. Sok was charged with armed assault to murder, assault and battery with a dangerous weapon, possession of a firearm without a firearm identification card, carrying a loaded firearm without a license and using a firearm during a felony. Not guilty pleas were entered. Bail was set at $50,000 cash, and the case was continued to Feb. 23.