I'm glad comms you liked the sparkie, I had bought 2 of them when they were first released, 1 was for testing and the other was for carrying. When I first used them I had one jam up on me right off the bat by striking more than the 3X that the instructions stated not to do. I rinsed it in the sink to free up the jam and the more I played with it, it has not jammed since. I don't care for the cheep plastic around the holder that holds the flint nor the small amount of flint that it has. After carrying one for some time and using it frequently at home and work playing with the test one, the latch is so wore down that it deploys in my pocket more than not. Compared to the size it takes up and the amount of flint available, I went back to my old blast match flint that I had removed from the carrier and a hacksaw blade. The Sparkie did what it was intended but the initial jam ruined any trust I had in the unit, plus long term survival I opted with a bigger amount of steel than that little piece in the sparkie. The one hand spark is a good idea, if they went with a different design and the same diameter as the blast match I might reconsider carrying one.

The steel they use makes starting fires real easy with any of there products, I still think the blast match rod are in my top ten carry.
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Failure is not an option!
USMC Jungle Environmental Survival Training PI 1985