The Anzio Ironworks 20mm Rifle is a single-shot bolt-action rifle chambered for the M168 Vulcan 20x102mm aircraft cannon round, making it the largest bolt-action repeating rifle commercially available to civilians in the United States. Built by Florida-based Anzio Ironworks, it is intended for extreme long-range anti-materiel demonstration and novelty shooting. The rifle requires a Class III dealer for transfer in most US jurisdictions depending on the ammunition configuration. Type: Rifle Action: Bolt-Action Caliber: 20x102mm Capacity: 1 Year introduced: 2001, USA Weight: 900 oz Overall length: 80" Status: Limited Production Intended use: Anti-Materiel, Long Range