Deal of the Century (1983)

"Chevy Chase and his partners are arms dealers. They sell second-rate weapons to third world nations. But they're not out to stick it to anyone."

Arms dealers from several companies vie to sell the most expensive and highest tech weapons to a South American dictator. There are complications; understanding the exact nature of how 'gifts' are used to grease the wheels of a sale, a religious conversion from one of the salesman and a romance that begins to grow between two competitors.