The majority of the catalogue consists of 20th and 21st century military equipment, like tanks, ships and airplanes.

Lego has a policy to not make realistic weapons and military equipment,[1] leaving an opportunity for other building block companies to fill this niche.

Cobi has various licensing deals, such as with Company of Heroes 3,[2] along with The Tank Museum[3] at Bovington Camp, and also for some Hollywood movies, such as Top Gun: Maverick.

Also, due to the restrictions of Lego concerning weapons, Cobi is one of the leaders of the building bricks company in this sector.

Cobi and Best-Lock, a British building block manufacturer with a strong presence in North America and Asia, announced a merger on February 2, 2006.