[Source] The Ap/11 was a model of laser cannon designed for use on vehicles produced by the Corellian Engineering Corporation during the Galactic Civil War. The Rebel Alliance fitted one Ap/11 double laser cannon to each of a number of Incom T-47 airspeeders as part of their modification into combat-worthy 'Snowspeeders' shortly before the Battle of Hoth. It could destroy an AT-ST with three shots but proved to have no effect on AT-AT's. Another use for the Ap/11 was to arm the F-LER.