Bot this Trench Lighter off the popular auction site for less than $6 delivered.
The metal bullet, hollow top, pulls off to reveal the lighter which is inserted, with a false bottom, into a 50 caliber shell.
It uses old school flint, fluid and wick to make fire.
I had to soak the business end in rubbing alcohol to loosen the cap. I was able to pull out the lighter insert after about ten minutes (my Kungfu grip is mighty). I removed & discarded the old cotton, which holds the liquid fuel, cleaned out the inside with metal polish and Qtips, packed the fuel resevoir with fresh cotton (used cotton balls from Kmart, $0.99 for a bag the size of your head), fueled with Rosonol and inserted a fresh flint into the flint channel.
It fired right up with a long hot flame.