The Browning M2 Browning .50 Cal Aircraft is a usa-made full-auto hmg chambered in .50 BMG, introduced in 1933. Primary use: military. Type: Machine Gun Action: Full-Auto Caliber: .50 BMG Capacity: 250 Year introduced: 1933, USA Weight: 256 oz Overall length: 43" Status: Discontinued Military use: Yes Intended use: military