This excellent split released last year is sadly the last release from Gas Chamber which doesn't exist anymore. They were one of the most original and brilliant hardcore bands and we could say that in a way they did to powerviolence what Refused did to hardcore. These four short songs are another testimony of that (those basslines are awesome!)
Disciples of Christ (who I hope are still active!) is another excellent band, more brutal and grindpunk, they are more traditionnal but they are really good at what they do and their four songs on this split are also really good.
Highly recommended split!
The BC page.