Jonah Hill and Miles Teller plays a pair of stoners who transform themselves into swaggering gunrunners in this outrageous but true tale.

At the height of the Iraq War, they manage to land a $300million arms deal with the Pentagon to supply the Afghan army.

The gobsmacking revelations in this dark comedy will have you see-sawing between tears of laughter, incredulity and rage.

Despite their broadly sketched characters, Hill and Teller do well, while director Todd Phillips plays fast and loose with the facts, clearly more awed than appalled by his heroes’ deeds.

The movie does land some glancing satirical blows, but is far more interested in revelling in the boys’ larky hijinks than in skewering war profiteering and the arms trade.