Navy Suspends Flight Training for Saudi Military Students in Florida

Mr. Alshamrani first arrived in the United States in August 2017 for a year of English-language training at Lackland Air Force Base in San Antonio, according to a Pentagon official. He later spent a year and a half in aviation training in Pensacola, before moving on to advanced strike fighter training in October.

In April, Mr. Alshamrani filed a formal complaint against one of his instructors at the base whom he accused of embarrassing him in front of other aviation students by mocking his mustache as looking like that of a pornographic actor.

The F.B.I. did not identify the shop where Mr. Alshamrani bought the gun, but ABC News reported it was Uber’s Lock and Gun in Pensacola. Naomi Uber, the owner, declined to comment on Monday, referring questions about the gun purchase to the federal Bureau of Alcohol, Tobacco, Firearms and Explosives, which in turn directed inquiries to the F.B.I.

“There is an ongoing investigation,” Ms. Uber said. “I can’t pull up paperwork. I don’t have authority to discuss anything with you.”

Kenny Lewis, who runs guided hunting tours in the Florida Panhandle, scoffed at the idea of hunting with a Glock 45 handgun. It is not unheard of, he said: A handful of hunters have shown up for trips in recent years with similar handguns, but they were mostly novice hunters. Sometimes, he said, hunters carried them out of fear of being attacked by a wild hog.

Mr. Lewis said most hunters prefer a rifle that can do more damage and has a longer range, even if it means firing at a slower rate.

“A Glock 45 is more purchased for self-defense, for creating harm to someone else or for target shooters,” Mr. Lewis said, “especially with an extended clip.”

Patricia Mazzei reported from Miami, and Eric Schmitt from Washington. Nicholas Bogel-Burroughs contributed reporting from New York and Frances Robles from Pensacola, Fla.