Ruger developed the LC9 as a 9mm version of its Lightweight Compact Pistol (LCP). The LC9 is a DAO hammer-fired sub-compact pistol that works well as a backup for off-duty law enforcement officers. It provides a seven-round capacity and retails for $443. We featured Ruger's LC9 as our "Arsenal" review for March 2012. Photos by Butch Simpson.