Mini Cross Bow (for small printers)
sthone's mini cross bow, split in half so I could print it on my printrrbot simple. I used a 4mm brim to print the joint piece and had to use the handle of a screwdriver to tap together a couple of the prints; it fits pretty tight. Use some super glue on the joint.
I used 3dAI's trigger http://www.thingiverse.com/thing:589146