The most amazing survival fire starting device ever conceived! With a single push, tinder placed in the end of the piston is ignited by the heat of compression, instantly becoming a glowing ember with no more effort than lighting a match.

As a survival device, one of the most compelling aspects of Wilderness Solutions fire pistons is their ability to ignite a variety of natural tinders that can be collected in the woods and fields without special preparation. Some of these tinders having practical value for fire making include true tinder fungus, mullein pith, milkweed pod ovum, milkweed down, cattail fluff, poplar cotton, and wood punk. In addition, cotton charcloth, familiar to flint and steel firemakers works very well in the fire piston and can be made at home.

(site has a few autoplaying videos, fyi)

Firepistons.com