I have been looking for a fire extinguisher to put in my SxS. The typical 2.5lb bottle is a bit bulky, and one charged with Halon or other stuff that doesn't leave residue everywhere is expensive! While browsing on another site I came across these: https://elementfire.com. 
Anybody have experience with these? Seems like a better alternative to a normal fire extinguisher for a multitude of reasons.
Am I missing something?

Anybody have experience with these? Seems like a better alternative to a normal fire extinguisher for a multitude of reasons.
Am I missing something?