Abstract: A single bolt-action receiver with a lower having the ability to accept multiple shaped magazines through an interchangeable magazine well, defining a magazine chamber shape. The interchangeable magazine wells may further comprise a first flange and a first aperture and a second flange and a second aperture. The first interchangeable magazine well defining a first magazine chamber shape, may be configured to receive a first ammunition magazine containing a first shape and first caliber ammunition. The first interchangeable magazine well can be removed and a second interchangeable magazine well containing a second chamber shape, may be configured to receive a second ammunition magazine shape containing a second shape and second caliber ammunition.

Abstract: An interchangeable magazine well system, method, and apparatus are provided. The interchangeable magazine well may comprise a magazine well housing defining a magazine chamber. The interchangeable magazine well may further comprise a first flange comprising a first aperture and a second flange comprising a second aperture and a geometric interface comprising a straight portion and a curved portion. The first interchangeable magazine well with a first magazine chamber shape, may be configured to receive a first ammunition magazine containing a first shape and first caliber ammunition. The first interchangeable magazine well can be removed and a second interchangeable magazine well containing a second chamber shape, may be configured to receive a second ammunition magazine shape containing a second shape and second caliber ammunition.