OK just to be clear -
Sub Sea Systems (aka Jason Koputai on this list) designed all the different units - he puts all the electronic componets together and made the units work (programming etc) , for all the Rebreather's Kiss, Mk15, Prism Home built etc.
However, the Mk 15 and (and soon to be Eagle) specific secondaries are sold and distributed by Colkan as they build and service these particular breathers. So if you want a secondary for a Mk15 or 15.5 click on the link to Colkan on the sub sea web page and talk to Colin or Kane - or here
mailto:cw@colkan.com BUT if you want something for another breed of unit (kiss, prism, homebuilt or whatever) then talk to Jason directly - on the "contact us" section of the Sub Sea Systems page - or here
Subsea Systems Contact Page
As I said it is a great piece of kit - just get one - you wont be dissapointed - OH and for the record I have absolutly NO commercial interest in this whatsoever - just believe it is a great piece of kit and it is nice to see people who have supported the Rebreather industry / community for so long get some regognition back.
Steve L