I have a "Pocket Chainsaw" in my BOB. It's very similar to the Walmart "motorcycle chain" type in this thread, except instead of the webbing handles, it has small wire looped handles that are designed to have a piece of wood slid thru them to use as a grip/handle.

I just googled it and they do have a website:

http://www.pocketchainsaw.com/

It cuts fairly well for what it is. Packs up in a round tin about the size of a chew can. I'm not sure of the weight but if you're weight conscious about your kit, this thing is fairly heavy for its size.
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