Now I'm no expert like some other people who can tell you about when some record was released and how may were printed and all that stuff. I'm not that knowledgeable. I've done some basic research on the internet and found this info on FLEX.
Henry Rollins and the Hard-Ons
let there be rock / carry me down 7"/12"/10"/double 10"
(7":) c/z records. / 2 tracks / 1991
UK (12"): vinyl solution. vs 30 / 2 tracks / 1991
AUS (10"): waterfront (??). / 1991
4000 made of the 7" version on C/Z, 500 on colored vinyl. Limited Aussie 10" version, same tracks as on 12", some on colored vinyl. Limited Aussie double 10" version, second 10" contains Rollins Sub Pop 7" (I know you / earache my eye), some on colored vinyl."
I don't know much about the history of this collaboration, but whatever the circumstances the results are great. The AC/DC cover rips and the B side is pretty great as well.
Download Zip file here.
Also enjoy this video. I hope I do this right.