| The BRDM-1 (also known as the BTR-40P) first appeared in 1959, and was in production until 1966. Total production was around 10,000 vehicles, less than 600 remain in the reserves of a number of countries. It was armed with a pintle-mounted heavy machine gun. The initial version of the vehicle, the Model 1957, had an open roof, but the standard production model, the Model 1958, had a roof with twin hatches. The vehicle was used as the basis of the 2P27 anti-tank missile launcher, using AT-1 Snapper missiles mounted in a retractable launcher. | 
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