SAN DIEGO—Firearms advocates filed a lawsuit in San Diego federal court this week challenging California’s 10-day waiting period for gun purchases. The lawsuit filed May 1 joins a number of others filed in San Diego in recent years challenging the state’s laws governing firearm and ammunition purchases and possession. It alleges the state’s waiting period…

SAN DIEGO—Firearms advocates filed a lawsuit in San Diego federal court this week challenging California’s 10-day waiting period for gun purchases. The lawsuit filed May 1 joins a number of others filed in San Diego in recent years challenging the state’s laws governing firearm and ammunition purchases and possession. It alleges the state’s waiting period…