haha this is completely a unnecessary accessory and its rimfire haha.
http://www.thefirearmblog.com/blog/2007/11/20/new-2200-fps-22-magnum-rimfire-wmr/
http://www.thefirearmblog.com/blog/2007/11/20/new-2200-fps-22-magnum-rimfire-wmr/
