Third grader Alex (Cary Christopher) is the one student in his class who didn’t go missing in “Weapons.” Courtesy of Warner Bros. Pictures

LOS ANGELES — “Weapons” found its way back on top during the Labor Day weekend, culminating a summer box office that’s likely to fall right below meeting last year’s earnings.

Zach Cregger’s horror proved its staying power as a late-summer viral success and regained the top spot after last weekend saw “Kpop Demon Hunters” give Netflix its first box-office win . “Weapons” generated $10.2 million during its fourth weekend in theaters.

Universal’s 50th rerelease of “Jaws” also made a splash in theaters, securing the second spot. Steven Spielberg’s 1975 film took “a bite out of the box office,” said Paul Dergarabedian, senior media analyst

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