Accuracy International AW50 in .50 BMG with 27-inch barrel, the predecessor to the AX50 that established AI in the anti-materiel rifle market. Type: Rifle Action: Bolt-Action Caliber: 50 BMG Capacity: 5 Year introduced: 1999, UK Weight: 340 oz Overall length: 53" Status: Active Military use: Yes Intended use: Military anti-materiel, long-range precision