Anzio Ironworks Corporation Mag-Fed 20mm

The Anzio 20mm rifle[2] is an American anti-materiel rifle designed and marketed by Anzio Iron Works. It is the first American anti-materiel rifle designed and mass-produced for public sale with a bore diameter in excess of .50 caliber in over 80 years.[3] The rifles are available in three chamberings: 20mm Vulcan (20×102mm), 14.5×114mm, and most recently Anzio's own proprietary caliber 20/50. The rifle's predominant chambering is the 20mm Vulcan caliber.