Article on the operation of Machine Guns, animated diagrams are included. The REME Museum of Technology – machineguns 美國專利第15,315号 – A patent for an early
Wayback Machine on February 2, 2006, 10:43:42 (UTC). Wayback Machine. December 1, 2005 [June 12, 2017]. (原始内容存档于February 2, 2006). SNL – The Chronic of Narnia