The MAC Chatellerault M24/29 Standard is a france-made select-fire lmg chambered in 7.5x54mm French, introduced in 1929. Primary use: military. Type: Machine Gun Action: Select-Fire Caliber: 7.5x54mm French Capacity: 100 Year introduced: 1929, France Weight: 64 oz Overall length: 10.7" Status: Discontinued Military use: Yes Intended use: military