AKEY-47

AKEY-47 is a gun that fires keys. Shooting a locked chest or door will unlock it. Alternatively, opening a chest or door with the AKEY-47 equipped will unlock it for free.

Trivia

 * The inscription "Ex Archa, Libertas" is a reference to the Latin phrase "Ex gladio libertas", or 'From the sword, freedom', with 'Archa', the word for 'Chest', replacing 'gladio', the word for sword.
 * The synergy Akey Breaky is probably a reference to the song Achy Breaky Heart popularized by Billy Ray Cyrus.