Finding a Replacement Barrel Key for a J. Stevens 1864 Rifle

Question
I HAVE A SEPT 6 1864 RIFLE WITH A MISSING BARREL KEY. (THIS KEEPS THE BARREL IN PLACE WHEN FIRING) WHERE COULD I FIND ONE OR HAVE ONE MADE.  DON'T HAVE A CLUE WHAT IT WOULD LOOK LIKE

Answer
Try these links:

http://www.gunsamerica.com/929549247/Guns/Rifles/Stevens-Rifles/J_Stevens_Arms_c...

http://www.gunsamerica.com/Search/Category/669/2/Guns/Pistols/Stevens-Pistols.ht...

http://www.thehighroad.org/showthread.php?t=94986

http://en.wikipedia.org/wiki/Stevens_Arms

http://www.google.com/search?num=100&hl=en&safe=off&biw=1408&bih=645&q=J.+STEVEN...

http://www.google.com/search?hl=en&source=hp&biw=1408&bih=645&q=J.+STEVENS+SINGL...