Easy off is sodium hydroxide- I would not use it on a gun stock, nor would I sit by a wood burning stove with flammable alcohol. If you use a flammable material, use it in a well ventilated space, and not in the house or garage where it might ignite and burn your place down. Also, use gloves. Anything that removes oil from a stock will surely remove the oil from your skin, and possibly worse.
Good luck and be safe,
Mike