Halon is an interesting product since it works unlike most extinguishers. The making of the product has been banded since the 90's for systems except in aviation. What remains today legally is Halon that was produced before 1994 and or has been recycled from systems removed under the band. Kills the ozone they say. For now you can get them - for how long is any any ones guess. Production is suppose to stop this year which conflicts with some earlier information - go figure. It is toxic and in portable extinguishers does not have a few far range for application.
Wouldn't want to pull the pin and use on in an enclosed area - not that I would with many of the different types
http://www.epa.gov/ozone/snap/fire/qa.html#qA1Believe this only relates to Halotron I and Halon 1211. FE-36 was one of the products designed to replace Halon 1211 and right now is not being fazed out of production so check those labels. Will not kill you as quickly and is safe for Mr Ozone too. Well right now
Have seen a few extinguishers triggered by mistakes at shows - what a mess. There are a number of choices but any extinguisher is better than watching the car burn to the ground - though it will almost guarantee that you will get in a magazine or two.
Most of the extinguishers I see at shows are not large enough to fight anything but the smallest of possible fires - plus most have no idea of how to apply the product they have.