Which close-in weapon combines a gun and missiles?

Which close-in weapon system combines missiles and a gun and weighs just over a tonne?

Two possibilities are offered: the Russian Kashtan, recalled as much heavier at about 12 tonnes, and a British 30 mm mounting fitted with light attack missiles.

Kashtan is offered tentatively as the Russian possibility, but its recalled weight of about 12 tonnes does not fit the question's one-tonne figure. The British alternative is a 30 mm gun fitted with new light attack missiles. There is also hesitation about whether that British arrangement should count as a close-in weapon system. The exact identification and weight remain unresolved.