I hate haikus.
This looks pretty great, but you lost me at the stock. It seems to be curved like a cane for the sake of curving like a cane.
I'd suggest giving it a more traditional stock with the cannister below it, then adding a metal hook (taped or bolted on) if you really want to give it that shape.
Ditto on what Huckle said; that bolt action doesn't look like it'd work.